248 



PERCY SLADEN TRUST EXPEDITION 



209. Psendocollod.es complectens, sp. nov. (Plate 20, fig. 4). 

 Seychelles, 34 fins., Sta. F 7 ; 4 $, 3 ? ovig. (1 $ is type). 



The body and appendages are covered with a short pubescence which is inconspicuous 

 and in no way obscures the markings. Length of carapace little greater than width ; 

 posterior margin very broad, concave. Dorsal surface with 4 cylindrical spines, 1 gastric, 

 1 cardiac, 1 on each branchial region ; 4 tubercles in a transverse row on gastric region, 

 and one on each branchial region above origin of last leg. The carapace is also roughened 

 with very fine spinules on the higher parts and near the lateral margins. The 2 frontal 

 teeth are acute and curve inward. Interantennular spine less advanced than front. 

 Three longitudinal furrows on front. Basal antennal joint with 2 rows of spinules, the distal 

 inner spine a little longer ; distal end visible from above, but less advanced than base of 

 frontal sinus. Antenna longer than width of front. A small emargination separates the 

 orbital arch from the postocular tooth, the end of which curves strongly forward. Hepatic 

 region with 2 lateral prominences, the anterior one angular and well advanced. Eyes with 

 cornepe enlarged, a tubercle at the summit. Orbit partially defined below by a short 

 spinulous crest. Abdomen with a median carina in both sexes, abdomen of $ smooth, of $ 

 spinulous as is also the sternum. 



Chelipeds about 1 Jr times as long as carapace, spinulous and on the margins more or less 

 spinous. Fingers and palm subequal in length, palm inflated in $, fingers compressed and 

 curved, minutely gaping in $. First leg 3^ times as long as carapace ; last 3 legs noticeably 

 slenderer than the first ; second reaching to end of propodus of first ; third nearly to end 

 of propodus of second ; fourth to middle of carpus of second. No one specimen is provided 

 with all its legs. 



210. Xenocarcinus tuberculatus White. 



Xenocarcinus tuberculatus Alcock (l), p. 192. 



(a) Cargados Carajos, 30 fms., Sta. B 17 ; 1 ? without legs, (b) Diego Garcia 

 1 4 fms. ; 1 ? ovigerous. 



Dimensions in mm. : (a) C. 1. 9*3, rostrum (to anterior edge of orbit) 2 "7. (b) C. 1. 

 97, rostrum (to anterior edge of orbit) 3'5. 



* Tip broken off. 



