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PENP:OrSIS DIOMEDEiE. 



185 



rancan Sea, and specimens thought by Professor S. I. Smith to belong to the 

 same species^ were obtained by the ^* Albatross" Expedition of 1884 in the 

 Gulf of Paria, Venezuela.* S. distindaVi^ a native of the seas of Japan. It 

 has never, I beheve, been figured, but from De Haan s description would 

 seem to be nearly allied to S. siphoiioccra. Bate, who examined the type 

 specimen of Pencils crassicoruis M. Edw., from Bombay, in the collection of 

 the Jardin des Plantes, Paris, assigned that species to the genus Solenocera m 

 1881,:}: and described a new species Solenocera keasii, taken by the " Challen- 



But in his later report on the 

 " Challenger" Macrura, 1888, he removes >S'. lucasii from Solenocera on ac- 

 count of the different structure of the anteimules, and leaves the reader m 

 doubt as to the proper position of Peneiis crassicornis, though from his remarks 

 on page 285 I infer that Milne Edwards's F^pecies does not belong to the 

 genus Solenocera, A connnon littoral Indian species of Solenocera is doubtfully 



ger" Expedition^ south of New Guinea. 



referred to Peneus crassicornis M. Edw., by Wood-Mason. 



Unlike S. siphono- 



cera and S. agassidi, it lacks brancluostegal spines and has a simple unarmed 

 telson. Finally, a Solenocera has been recorded by Wood-Mason from the 

 Bay of Bengal, 65-240 fathoms. In this species, Solenocera hextu,\\ as in 

 S, agassizii^ the antennular flagella are shorter and broader than m any or 

 the previously described species, but the branchiostegal spine is wantmg. 



The spiny armature of the carapace of S- agasskii agrees with that or 

 S, sipJio7iocera, consisting of an antennal, an hepatic, and a branchiostegal 

 spine, and a sharp lateral spine on the edge of the cervical groove ; 

 supra-orbital angle is prominent, but is not produced to a spnie. 



the 



PENEOPSIS Bate. 



Ann. Mag. Nat. Hist., 5th Scr., VIII. 182, 1881 IFenaopml. 



Peneopsis diomedese Fax. 



Plate G. 



Bull. Mus. Comp. Zool, XXIV. 2 J 2, 1893. 



Integument hard, firm, and smooth. Carapace, including rostrum, about 

 four fifths the length of the abdomen. Rostrum long, nearly horizontal 



'I 



* Proc. U. S. Nat. Mas., VIII. 180, 1885. 



t Pen^^us distindus De Ilaan (Fauna Japouica, Crustacea, p. 194, 1849); Solenocera 



Crroc. ZoOlog. Soc. Loudon, 1878, p. 302). 



X Ann. Mag. Nat. Hist., 5Ui Scr., VIII. 185. 



§ Ami. Mag. Nat. Hist., Gtli Scr., VIII. 275, 1891. 



II Wood-Mason, Ami. Mag. Nat. Hist., 6tli Scr., VIL 188, VIIL 275, 1891. 



24 



distiiicla Micrs 



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