528 Dr. A. Alcock — A Revision 



The poslrostral carina, which is continued right up to the 

 posterior border of the carapace^ is sharp and particularly 

 prominent. 



The antero-inferior angles of the carapace are merely 

 dentiform ; the sinuous subhepatic ridge (defining the 

 anterior part of the cervical groove) stops far short of the 

 antero-inferior angle of the carapace. 



The longitudinal fissure of the carapace extends only a 

 short way behind the level of the hepatic spine. 



The telson is short and has no marginal spinelets. 



The antennular flagella, which are equal^ are about two 

 thirds the length of their peduncle. 



All the joints of the third maxillipeds except the dactylus 

 are abnormally broadj coarse, and tomentose. 



The fifth pair of thoracic legs reach only to the middle of 

 the antennal scale. The basal spines of the chelipeds are 

 big, and in the female there is one on the third chelipeds as 

 well as on the first and second. 



The andricum has on its outer edges the same basal wing- 

 like lobule as that of Parapeneopsis sculptilis, Heller, but the 

 organ ends in a pair of long calipers. 



The thelycum is concave and three-lobed ; the middle lobe 

 is very large and leaf-like ; the lateral lobes, lying between 

 the fifth pair of legs, are small and have between them in 

 the middle line a globous tubercle, behind which is a thick 

 tuft of long seta. 



This species, which attains a length of 4i inches, has been 

 taken at Bombay, at Madras, and off the Arakan coast. It 

 may turn out to be Kishinouye's Parapeneopsis cornuta, a 

 Japanese species which Nobili has also recorded from 

 Bombay. 



5. Parapeneopsis uncta, sp. n. 



Compared with Parapeneopsis stylifera (Edw.) this species 

 exhibits the following points of difference : — 



The integument is even thicker and denser, and, though 

 sparsely punctate, has a polished greasy appearance. 



The rostrum has but a faint double curve, and, owing to 

 the absence of any styliform prolongation, reaches only to the 

 middle of the second joint of the antennular peduncle in 

 both sexes. 



The antero-inferior angles of the carapace are sharply 

 rectangular, not spiniform or dentiform. 



As in Parapeneopsis scuJptilis, Heller, the postrostral 

 carina is canaliculate and the sinuous subhepatic ridge 



