obtained in the Imlian Seas. 2-19 



being present between the two divisions of the cervical groove 

 and no spine at all at the extreme antero-lateral angle of the 

 carapace. In other respects this specimen agrees with 

 descriptions of M. ciliata. 



Last season at Sta. 310, Bay of Bengal, 960 fathoms, three 

 small specimens of this species were caught in the same 

 trawl : the smallest had the five tj'pical spines on the lateral 

 margins of the carapace; the other two had an extra small 

 spine (making four in all) between the two divisions of the 

 cervical groove. The number of spines on the lateral borders 

 of the carapace of this species would thus seem to vary from 

 three to six. 



Fam. Uroptychidse. 



Uroptychus, Henderson. 



Vroptychus glyphodactylus, sp. n. 



Length of carapace, including rostrum, less than its 

 greatest breadth. Carapace moderately convex from side 

 to side, its surface and margins all smooth and glabrous 

 except for a spine at each antero-lateral angle. Hardly any 

 indication of regions. Rostrum has a broad base, but is 

 exceedingly short, horizontal, and placed on a low^er level 

 than the summit of the carapace; in length it is considerably 

 shorter than the eye-stalks. The pterygostomial region is 

 very limited in extent, smooth, slightly inflated, and pro- 

 duced anteriorly as a well-marked acute spinule. 



The eyes are of moderate size and, to tlie naked eye, of a 

 uniformly bi'own colour ; but under a lens they appear as a 

 delicate dark brown network enclosing large pale facets. 

 The eye-stalks are short, stout, and freely mobile. 



The antennal acicle is very short and stunted, not more 

 than ^ the length of the antennal peduncle, the distal end of 

 the penultimate joint o£ which the acicle does not reach. 

 Like the rostrum it is broad at the base and rapidly tapers 

 to a point. The flagellum is barely twace the length of the 

 peduncle. 



3rale. Female, 



uiin. iiiui. 



Lengtli of bodv, iiichidinp rostrum 11 



„ „' excluding _ „ lO^ 



„ carapace, including rostrum .... 4f 4j 



„ clielipeds 26 22 



„ second pair (longest; of ambula- 



latory legs 12 12 



Greatest breadth of carapace 5^ 5^ 



Ann. ds Mag. N. Hist. Ser. 7. Vol xv. 18 



