244 On Indian Deep-sea Dredging. 



In the male the first pair of abdominal legs are small, 

 curved, rigid rods ; the second pair are well developed, and 

 the third, fourth, and fifth, which are long and delicate, are 

 present on the left side only. The female has not been 

 dredged. 



Several specimens were taken at Station 120 in 240 fathoms, 

 living in dead shells of a small Natica. 



A large male measures about 19 millim. in length. 



Pylocheles, a. Milne-Edwards. 



74. Pylocheles scorpioj sp. n. 



The form of the body is long and slender, the cephalothorax 

 being almost cylindrical. The carapace is long and narrow, 

 its greatest length being more than twice its greatest breadth ; 

 the portion in front of the cervical groove is strongly calcified 

 and is smooth and polished, while the portion behind the 

 cervical groove is much less strongly calcified dorsally, where 

 it is also pitted and striated, and laterally is quite mem- 

 branous ; the thickened and moulded frontal margin is 

 remarkably excavated behind the eye-stalks, a small rostrum 

 projecting into the excavation ; the lateral projections of the 

 branchial regions are not visible from above. 



The abdomen is long and narrow, its length, which is 

 nearly twice that of the carapace, being four times its greatest 

 breadth, all the somites being distinct and symmetrical. 

 The abdominal terga after the first are rectangular plates, 

 with the margins thickened and strongly setose, and the 

 surface pitted and hairy ; the terga of the first and sixth 

 somites, of the telson, and of the fifth somite in the middle of 

 its posterior third are considerably the more strongly calcified. 



The long eye-stalks taper acutely from a broad base to 

 the small bead-like unpigmcnted cornea ; their dorsal surface 

 is thorny and hairy towards the edges, and their length is 

 less than that of the antennulary peduncles by rather more 

 than the terminal joint of the latter. 



The antennulary peduncles when moderately extended 

 measure more than half the carapace in length ; in the female 

 the upper flagellum tapers to a lash from a stout inflated 

 base, and is nearly as long as the peduncle, while the lower 

 flagellum is a fine short filament. 



The antcnnary peduncle exceeds the eye-stalks by rather 

 more than half the length of its terminal joint ; the basal 

 joint has the front edge serrated ; the aeicle is thorny and 

 hairy, and its point reaches just beyond the level of the 



