Indian Deep-sea Dredging, 193 



(3) Species in which the anterior moiety of the fourth crest 

 is undivided and terminates anteriorly in a single small spine, 

 and the ridges and tubercles of the occasionally pubescent 

 dorsal integument are more or less blunt and smooth. — O. 

 longirostrisj S. I. Smith, G. hastacauda and G. acuminata^ 

 Spence Bate, IG. nohilis^ A. Milne-Edwards, and the two 

 following species, of which the firsts though belonging to the 

 collection of a previous season, may fitly be introduced here : — 



12. \_Glyphocrangon Gilesii^ sp. n., Wood-Mason. 



Distinguished not only from all the other members of its 

 group, but also from all the other species of the genus, by 

 possessing the full complement of complete crests on both 

 divisions of the carapace, the anterior moiety of the third 

 crest being developed and produced anteriorly into a small 

 spine just as in the case of the fourth crest. The gastric 

 moiety of the second crest is divided into three parts, the 

 foremost of which is produced into a minute spinule. There 

 is a small tubercle in the gastro-rostral groove between the 

 front ends of the dorsal (first) crests. With these exceptions 

 the integument of the carapace is quite smooth and, except on 

 the summits of the crests, which are very distinctly foveolate- 

 rugose, somewhat polished. Except for the median crests 

 and transverse grooves the sculpture of the abdominal terga 

 is obsolete. The pleura of the four intermediate somites are 

 bispinose at the extremities, with the smaller tooth posterior 

 in the first three and anterior in the last, where the posterior 

 spine rivals the single si^ine of the last pleuron. The antenna! 

 spine is longer ai'.d horizontally more expanded than the 

 antero-lateral, which is invisible from above. The dactylo- 

 podites of the fourth and fifth pairs of legs are lanceolate and 

 simply acute at the tips. 



A single female was obtained on the 8th December, 1887, 

 eight miles south-east of Cinque Island, in the Andaman 

 Sea, in 500 fathoms ; bottom green mud. 



The colour in spirit is ivory-white, with the tips of the 

 spines, rostrum, and telson and the summits of the crests pale 

 orange. 



Length of rostrum 11 inillim., of carapace 13*75, of abdo- 

 men 33 ; total 56'75 millini.] 



13. Glyphocrangon unguiculata, sp. n., Wood-Mason. 



Closely allied to the preceding ; difters in the carapace and 

 abdomen being covered with a very thin, filmy, delicate, and 



