36 



defined in much the same way as Dorippe. The front is narrow and the whole 

 fronto-orbital region Hes well inside the semicircular curve of the antero-lateral 

 margins : the narrow front ends in two little teeth between and beyond which 

 can be seen the roof of the greatly prolonged buccal cavern, as in Dorippe polita. 

 On either side of the front is a spine that forms the roof of the orbit, and outside 

 of this spine, and separated from it by a deep notch, is a spine that forms the 

 outer wall of the orbit. 



The eyestalks are slender, moderately long, and freely movable : the eyes are 

 almost without pigment. 



The antennules have their basal joint lodged in a deep crevice between the 

 edge of the anterior prolongation of the buccal cavern and the antennae : their 

 long flagellum cannot be concealed in flexion. The antenna are large, but are 

 much smaller than the antennules. 



The buccal cavern is of great size, — not much less than half the length of 

 the body, and is gradually narrowed anteriorly, and prolonged beyond the tip 

 of the front : it is closed, except at its extreme frontal tip, by the long narrow 

 external maxillipeds, the merus of which is not very much shorter than the 

 ischium measured along the inner border and the flagellum of which is exposed 

 in flexion : the long narrow pointed exognath is not much longer than the 

 ischium : beneath the external maxillipeds the anterior prolongation of the buccal 

 cavern is closed in below by a lamellar process of the first maxillipeds. 



The chelipeds in both sexes are short, massive, and equal and symmetrical : 

 the hands are of the chopper-shaped, almost subcheliform, Raninoid type, the 

 stout fingers being almost at right angles to the long axis of the hand. 



The first and second pairs of true legs are stout and are of great length, 

 their merus being of relatively enormous length : the third and fourth pairs on 

 the other hand, which are dorsal in position as in Dorippe, are extremely short 

 and of filiform tenuity. 



The abdomen in both sexes consists of six segments : in the male two or 

 three of them are fused and the whole abdomen is very small, in the female the 

 last segment is of great size. 



[? The afferent branchial opening appears to lie in the deep crevice between 

 the base of the antennse and the edge of the buccal frame, in which the basal 

 joint of the antennules is lodged.] 



Cytnononiops glauconitna, Alcock. 



Cymonomops glaueomma, Alcock, Aun. Mag. Nat. Hist., May 1894, p. 406, and 111. Zool. ' Investigator,' Crne- 

 lacea, pi. xiv. fig. 9, and i. A. S. B. Vol. LXV. pt.2, 1896, p, 287. 



Carapace subcircular ; it and the appendages are very closely and finely 

 granular beneath a dense pubescence. The front consists of three deeply cut 



