1896.] A. Alcock — Carcinohgical Fauna of India. 259 



83. ParipMculus rostratus, n. sp. Plate VIII. fig. 2. 



Carapace globular, a little longer than broad, with the front promi- 

 nent and projecting in the form of a snout; its surface covered with 

 very small, distant vesicles, beneath a dense fine pubescence : the intes- 

 tinal region exactly resembles that of P. coronatus, and the gastric and 

 cardiac regions are incompletely defined in the same way : on either 

 lateral border are six sharpish tubercles, the first of which — situated 

 about the middle of the pterygostomian ridge — and the third — situated 

 near the anterior limit of the branchial region — are enlarged and 

 spiniform : at either end of the short posterior margin is a dentiform 

 tubercle : the side-wall of the carapace is traversed lonn^itudinally by 

 two grooves, one just above the epimeral edge, the other just below the 

 lateral margin, and the surface between the grooves is tumid. 



The very prominent front is sharply bidentate, the tips of the teeth 

 being somewhat sharpened and thickened : the space between the edge 

 of the orbit and the edge of the buccal cavern is much reduced. 



The chelipeds are similar in both sexes and are about Ij times the 

 length of the carapace, sometimes less than this : the hand is subglo- 

 bular but not so swollen as in IpMculus and is only about half the 

 length of the fingers : the fingers are slender, hooked at tip, and finely 

 denticulate, the denticulations, however, being obscured by a thick 

 growth of short colourless hairs ; they open in an obliquely vertical 

 plane. 



The largest specimen — an apparently adult female — has the cara- 

 pace 32 miiliin. long and 27 millim. broad. 



Loc. Off Malabar coast 28 to 45 fms., off Coromandel coast 25 to 

 30 fms., on soft muddy bottoms. 



Nursilia, Bell. 

 Nursilia, Bell, Trans. Linn. Soc. Vol. XXI. 1855, p. 308, and Cat. Leucos. Brifc. 

 Mus. p. 20. 



Carapace broader than long, bluntly polygonal, with the lateral 

 borders sharp, thin, laminar, somewhat turned up, and with the sur- 

 face broken by some definitely-placed ridges and distant spines. Front 

 prominent, bidentate: orbits with two distinct sutures, their lower 

 edge not distinct from the edge of the buccal cavern. Antennae with 

 longish flagella, their basal joint occupying the very much restricted 

 space between the eye and the obliquely folding antennules. 



Buccal cavern elongate-oval, the hairy tips of the external maxil- 

 lipeds projecting beyond the edge of the buccal cavern : the merus 

 much hidden in hair (more so than in Ixa) and considerably less than 

 half the length of the ischium. 



