A documented and illustrated checklist of land, mangrove and rivers Decapoda is proposed for Mayotte region. The study area is situated between longitudes 43-48° E and latitudes 11-13°10’ S. It includes Mayotte Island, Comoros Islands, and Glorioso Islands. Records of the species are from a fieldwork at Mayotte in November 2009, complemented by a literature review. 58 species are listed including 24 new records for Mayotte region. The inventory includes 42 crabs, 11 shrimps and 5 coenobitids (Birgus latro, Coenobita spp.). Crabs Grapsoidea (Cardisoma, Geograpsus, Grapsus, Metasesarma, Metopograpsus, Neosarmatium, Pachygrapsus, Parasesarma, Perisesarma, Pseudograpsus, Pseudohelice, Ptychognathus, Sesarmops, Thalassograpsus, and Varuna) are best represented together with the Ocypodoidea (Chaenostoma, Dotilla, Macrophthalmus, Ocypode, and Uca). Shrimps belong to the genera Atyoida, Caridina, Macrobrachium, and Palaemon. Biotopes investigated include rivers, mangroves, estuaries, land, and coastal areas with a special attention paid to Malamani mangrove in the west coast of Mayotte Island. The fauna of Mayotte region is predominantly indo-west pacific in its composition (45 species). Thirteen species are distributed only in the western Indian Ocean, but only one is perhaps endemic to the region. A comparison with the fauna of the Seychelles Islands shows that at least 6 additional species, widely distributed in the Indo-West Pacific, are potentially also present in Mayotte region.

BENTHEDI, Restreint, MIRIKY

ATIMO VATAE, AURORA 2007, BIOPAPUA, BORDAU 2, CORINDON 2, Restreint, LAGON, MD32 (REUNION), MIRIKY, MUSORSTOM 1, MUSORSTOM 10, MUSORSTOM 3, MUSORSTOM 7, PANGLAO 2005, Restreint, SANTO 2006, Restreint

SANTO 2006

Twenty-two species of Oplophoridae have been collected in the Philippines and Indonesia. All of them are known, but twi, Acanthephyra brevirostris Smith, 1855 and Hymenedora sp., have never been reported before in these counties.

CORINDON 2, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3

Numerous samples of Stylodactylidae collected between 1976 and 1989 off the Philippines, New Caledonia and Chesterfield Islands (MUSORSTOM, BIOCAL, CHALCAL, CORAIL 2 a n d SMIB cruises) are studied here. Other collections from Indonesia (CORINDON 2 cruise), Madagascar (coll. A. CROSNIER and R. CLEVA), and la Réunion (« MARION DUFRESNE », cruise M D 32) are included. This material is of particular interest since many specimens of various taxa have been collected : eighteen species and subspecies have been identified in it, of which nine are new : three species and one subspecies in the genus Stylodactylus. four species in the genus Parastylodactylus, and one in the new genus Stylodactyloides. Nine species and one subspecies of the genus Stylodactylus A. Milne Edwards, 1881., are represented in the collections studied here. S. laurentae sp. nov., with its typically short rostrum, seems to be one of the most common shrimps of the genus in New Caledonia and Chesterfield Islands. S. profundus sp. nov., unfortunately represented by specimens in incomplete or poor condition, extends the bathymetric range of the family : it has been collected, off New Caledonia, between 1395-1410 and 1618-1740 m. S. brevidactylus sp. nov. is represented by a single specimen from the Philippines : we at first considered that this specimen was an aberrant example of S. multidentatus Kubo, 1942, but decided then to re-examine our opinion because of its peculiar characters. Twenty seven specimens (eleven from the Philippines and sixteen from Chesterfield Islands and New Caledonia) have been identified as S. licinus Chace, 1983, a little known species described from the Philippines, and eleven others (one from Indonesia and ten from New Caledonia and Chesterfield Islands) as S. tokarensis Zarenkov, 1968, only known by the holotype collected in the east China sea (the paratype of S. tokarensis is suspected of being a specimen of S. licinus Chace). S. multidentatus Kubo, 1942, is probably one of the most commonly caught species of the family. Many specimens have been collected by the french campaigns from the Philippines, New Caledonia, and Madagascar : Neocaledonian specimens differ from the former by a longer rostrum and longer spines on the margin of the antennal scale. These differences are still more accentuated in Madagascarian specimens, and we finally decided to create for them a new subspecies, S. multidentatus robustus. Two other species of Stylodactylus are represented in our material : S. macropus Chace, 1983, of which the only previouly known specimen was collected by the « ALBATROSS » in the Philippines, is reported here, again from the Philippines and from New Caledonia and Chesterfield Islands. S. libratus Chace, 1983, described from a single specimen from Indonesia (Celebes, « ALBATROSS » collection) and reported then from Australia (New South Wales) by KENSLEY, TRANTER and GRIFFIN (1987) has been collected in New Caledonia and Chesterfield Islands. One specimen from Madagascar appears to be very close to S. libratus but shows however some différences from it, so that we identify it as S. aff. libratus. The genus Neostylodactylus Hayashi & Miyake, 1968, is represented in our material by two species : N. amarynthis (de Man, 1902), and N. affinis Hayashi & Miyake, 1968 : in these two species we have noted the very particular sexual dimorphism mentioned by CHACE (1983 : 6) for N. amarynthis : females differ from maies in lacking arthrobranchs on pereiopods 1 to 4. The geographical distribution of N. amarynthis extends now, in the Indo-Pacific, to the southwestern Indian Océan (La Réunion), and that of N. affinis, previously known only from the Korea Strait at 120 m depth, is shown to belong to the New Caledonia and Chesterfield Islands fauna ; it has been caught between 235 and 440 m. Four new species have been included in the genus Parastylodactylus created by FIGUEIRA in 1971 for Stylodactylus bimaxillaris Bate, 1888, and until now monospecific. P. bimaxillaris (Bate), known from a large part of the Indo-Pacific, is mentioned for the first time from New Caledonia and Madagascar. P. tranterae sp. nov., collected off New Caledonia and Chesterfield Islands, was first reported from Australia (New South Wales) by KENSLEY, TRANTER a n d GRIFFIN (1987) who suspected that it was a new species, butdid not name it, on account of the poor condition of the single specimen in their possession. P. semblatae sp. nov. seems to be very common in New Caledonia and Chesterfield Islands. P. richeri sp. nov., from New Caledonia, and P. longidactylus sp. nov., from the Philippines, each represented by a few specimens only, are fairly closely related species, but however are clearly distinct taxa. A new genus, Stylodactyloides, is proposed for a new species collected from New Caledonia and Chesterfield Islands, 5. crosnieri, which has a very unusual stylocerite, broadly rounded distally, which distinguishes it from ail other members of the family. It may be noted that several points in the systematics of the Stylodactylidae remain obscure. These will necessitate the examination of new collections. This work, however, shows the particular interest of these collection, concerning a little known and poorly represented family (nine new taxa described, representing more than one third of the species known until now), and indicates the richness of New Caledonia and Chesterfield Islands waters, where thirteen species have been collected, including six of the nine new ones. Ail the new taxa have been illustrated, and individual variations carefully studied in the species represented by numerous specimens. Color photographs of several species, taken on board during some of these cruises, complété the iconography. Identification keys are proposed for the four généra and twenty six species and subspecies now recognized in the family.

BIOCAL, CHALCAL 2, CORAIL 2, CORINDON 2, MD32 (REUNION), MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 4, MUSORSTOM 5, MUSORSTOM 6, SMIB 1, SMIB 2, SMIB 3, SMIB 4, VAUBAN 1978-1979

MUSORSTOM 7

During the French-Indonesian expedition KARUBAR off Kai and Tanimbar Islands (Moluccas) in 1991, eight species of Stylodactylidae were collected. One of these species, Parastylodactylus moluccensis was new. Two other species, Parastylodactylus richeri Cleva, 1990, and Neostylodactylus affinis Hayashi & Miyake, 1968, are recorded from the region for the first time and the remaining five species, Stylodactylus tokarensis Zarenkov, 1968, S. multidentatus Kubo, 1942, S. libratus Chace, 1983, Parastylodactylus bimaxillaris (Bate, 1888), and Stylodactylus licinus Chace, 1983, are already known from the Indonesian area, the last one having been recorded recently by TAKEDA and HANAMURA (1994). On the other hand, some specimens, at first identified doubtfully as Stylodactylus libratus, and related to Stylodactylus pubescens Burukovsky, 1990, have been causing trouble to us, and we have not find till now a satisfying solution: they are mentionned here as Stylodactylus sp. Stylodactylus brevidactylus Cleva, 1990, considering the variability observed through 49 specimens of S. multidentatus Kubo collected during this cruise, is synonymised with this species. We added to the indonesian material, for each different species, the specimens collected recently from Wallis and Futuna, the Vanuatu and New-Caledonia. The species from these three countries which have not been collected during the KARUBAR expedition are mentionned at the end of this study.

BATHUS 1, BATHUS 2, BATHUS 3, BATHUS 4, BERYX 11, BIOCAL, CHALCAL 2, HALIPRO 1, KARUBAR, MONTROUZIER, MUSORSTOM 7, MUSORSTOM 8, SMIB 8

Twenty nine specimens of the rare deep-sea shrimps Bathypalaemonellidae, just represented until now by few species and specimens (nine species, gathered in only one genus, Bathypalaemonella Balss, 1914) have been collected during different cruises, that occured, on the one hand, in the east Atlantic (Ibero-Moroccan Gulf: BALGIM-84, 1984, and SEAMOUNT 1, 1988; Açores, BIACORES, 1971), and on the other hand, mainly in the Pacific Ocean: Philippines (MUSORSTOM 2 , 1980); Indonesia (KARUBAR, 1991); New Caledonia (BIOCAL, 1985; MUSORSTOM 4, 1985; SMIB 2, 1986; VOLSMAR, 1989; HALIPRO 2, 1996); Vanuatu (MUSORSTOM 8, 1994); Marquesas islands, French Polynesia (MUSORSTOM 9, 1997), and another specimen from the Gulf of Aden (SCIMEROUAD, 1977), that prove to belong to a new species, Bathypalaemonella adenensis n. sp., which can be separated from the seven other species maintained in the genus Bathypalaemonella, by the feature of the scaphocerite (the latero-distal spine overreaches significantly the distal margin of the blade), and of the telson, ended by three pairs of spines. Seven species have been collected: apart from Bathypalaemonella adenensis n. sp., these are: Bathypalaemonella serratipalma Pequegnat, 1970; B. hayashii Komai, 1995; B. cf. humilis Bruce, 1966; B. pandaloides (Rathbun, 1906); B. brevirostris Bruce, 1986; B. pilosipes Bruce, 1986. Bathypalaemonetes n. gen. is established for the last two species mentionned above, Bathypalaemonella brevirostris and B. pilosipes, which can be separated from the species of the genus Bathypalaemonella by a set of features such as: cephalothorax with at the most one postrostral spine; major second pereopod with the ischium shorter than the merus, and its fingers showing a serie of tubercles; minor second pereopod with the dactyl far less shorter than the palm. A key to the genera and species of the family is proposed.

Restreint, Restreint, BIOCAL, HALIPRO 2, KARUBAR, MUSORSTOM 2, MUSORSTOM 4, MUSORSTOM 8, MUSORSTOM 9, Restreint, SMIB 2, VOLSMAR

Seven shrimp species of the family Stylodactylidae are reported here from Taiwanese waters, four of which represent new records for the area. Only three species of this family were previously known from Taiwan: Stylodactylus in multidentatus Kubo, 1942, and Parastylodactylus bimaxillaris (Bate, 1888), both present in the collection studied here, and Bathystylodactylus inflatus Hanamura & Takeda, 1996, no material in the present collection. Stylodactylus major Hayashi & Miyake, 1968, is recorded for the second time. The other species are: Stylodactylus libratus Chace, 1983, Stylodactylus licinus Chace, 1983, and Stylodactylus tokarensis Zarenkov, 1968. On another hand, the status of a seventh species, related to Stylodactylus pubescens Burukovsky 1990, is left unresolved. The rare deep-sea shrimp family Bathypalaemonellidae is added to the Taiwanese decapod fauna, being represented by four species, one of which is new: Bathypalaemonella hayashii Komai, 1995; Bathypalaemonetes brevirostris (Bruce, 1986); Bathypalaemonetes pilosipes (Bruce, 1986) and Bathypalaemonetes chani, new species.

BATHUS 3, BATHUS 4, BERYX 11, BIOCAL, BORDAU 1, BORDAU 2, CHALCAL 2, KARUBAR, MUSORSTOM 1, MUSORSTOM 10, MUSORSTOM 2, MUSORSTOM 4, MUSORSTOM 8, MUSORSTOM 9, SALOMON 1, TAIWAN 2000, TAIWAN 2001, TAIWAN 2002, TAIWAN 2003

Heterocarpus tenuidentatus n. sp. is described from an ovigerous female collected off the Solomon Islands at a depth of between 814 and 980 meters. It is distinguished by a branchiostegal carina that extends along two thirds of the carapace, this being the only long, sharp carina on the lateral part of the carapace. It is also characterized by having the rostrum scarcely longer than half the length of the carapace, the small size of the upper rostral and postrostral teeth, the proportionally wide blade of the scaphocerite, and by being larger in size than any other Heterocarpus species.

SALOMON 2

More than a century after its description from the Kermadec Islands, north of New Zealand, Stylodactylus discissipes Bate, 1888 has been rediscovered south of New Caledonia, and in the Austral Islands, French Polynesia. DNA analyses show that specimens from these two widely separated areas clearly belong to the same species, and represent two populations that appear to be in early stages of speciation through isolation. Stylodactylus discissipes shares numerous morphological characters with S. serratus A. Milne-Edwards, 188 1, known from the eastern and western Atlantic, so that the synonymy of the two species could be considered. Molecular data support the small morphological differences observed, giving evidence that these two species are indeed different.

BENTHAUS, NORFOLK 2

The greatest part of the types of the brachyuran crabs (Crustacea, Decapoda) in the Crustacea collection of the Museum national d'Histoire naturelle, Paris, is already catalogued on registers and is to be gradually published. This first annotated catalogue lists the nominal species belonging to the Podotremata (i.e. crabs with coxal male and female gonopores, and spermathecae): families Homolodromiidae, Dromiidae, Dynomenidae, Homoliclae, Poupiniidae, Cycloclorippidae, Cymonomidae, Phyllotymolinidae and Raninidae. The names of the taxa are presented in their original combination. The erroneous references to specimens as "types" have been noted and corrected in conformity with the International Code of Zoological Nomenclature. The types of a total of 104 species are listed herein, out of about 370 known species of podotreme crabs. Photographs of most of the type specimens are also provided. A bibliography and an index are included.

Restreint, BATHUS 1, BATHUS 2, BATHUS 3, BENTHEDI, BERYX 11, BIOCAL, BORDAU 1, BORDAU 2, CHALCAL 1, CHALCAL 2, CORAIL 2, HALICAL 1, KARUBAR, LAGON, LIFOU 2000, MD32 (REUNION), Restreint, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 4, MUSORSTOM 5, MUSORSTOM 6, MUSORSTOM 7, MUSORSTOM 8, MUSORSTOM 9, Restreint, SALOMON 1, SMCB, SMIB 2, SMIB 3, SMIB 4, SMIB 5, SMIB 6

Five species of the family Stylodactylidae Bate, 1888 and two species of Bathypalaemonellidae de Saint Laurent, 1985, were collected by the PANGLAO 2004 and 2005 expeditions to the Philippines. A member of the Stylodactylidae, Stylodactylus gracilis new species, collected at 2149-2217 m, is described and illustrated. The new species is distinguished from the 15 described species of Stylodactylus by a very thin and glabrous integument; a very long ( 0.8 times of carapace length) antennular peduncle, by the lengthening of the second segment ( 1.8 times longer than first); thin and very long third to fifth pereopods, as a result of the lengthening of the meri and propodi. The two species of Bathypalaemonellidae, Bathypalaemonella aff. hayashii Komai, 1995, and Bathypalaemonetes brevirostris ( Bruce, 1986), represent new records for the Philippines.

PANGLAO 2004, PANGLAO 2005

PANGLAO 2005

Ce travail inclut, en plus des échantillons de STENOPODIDEA de l'Expédition MUSORSTOM 1976, la collection des espèces de ce groupe récoltée en 1908 et 1909 aux Philippines par l'expédition de l'Albatross. Neuf des onze espèces signalées sont nouvelles pour la région, un genre nouveau est établi pour une forme nouvelle ainsi que 3 espèces ou sous-espèces du genre SPONGICOLA.

MUSORSTOM 1

ATIMO VATAE

Seventeen species of Stomatopoda belonging to five families have been collected in the Strait of Makassar, Indonesia during the Franco-Indonesian mission "CORIN-DON II". Four species of the family Squillidae: Kempina mikado, Lenisquilla spinosa, Oratosquilla imperialis, and O. ornata are for the first time reported to exist in the Indonesian waters.

CORINDON 2

A collection of crabs assembled during the KUW 2009 expedition to Mayotte Island and deposited in the Muséum national d’Histoire naturelle Paris is studied. In total 202 species are recognized, 138 of them being new records for the Island and a list of brachyuran crabs is documented and illustrated with photographs. A complementary list of all crabs previously in taxonomic literature from Mayotte and its nearest Islands (Comoros Islands, Glorieuses Islands and marine banks of Zélée, Geyser and Leven) is also provided. In total 298 crabs are identified from the region, the richness of this fauna is discussed with zoogeographic considerations and the prospects for further studies are outlined.

BENTHEDI, BIOMAGLO, MIRIKY

BOA0, BOA1, CORINDON 2, KARUBAR, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 7, SALOMON 1, SALOMON 2, SALOMONBOA 3, SMCB, TAIWAN 2000, TAIWAN 2001, TAIWAN 2002