240 Carcinological Fauna of India. 



The abdomen of the adult male consists of two linear and hidden 

 basal pieces, a triangular apical piece, and a long triangular middle 

 piece in which the division of the 6th tergum is marked by a faint 

 transverse groove. 



The diameter of the carapace of the adult male is 12 to 14 millim., 

 of the adult female about 10 millim. 



Colour's in spirit: carapace mottled with dull brown and greenish 

 shades ; chelipeds distinctly and legs indistinctly banded with dull 

 brown. 



In the Indian Museum collection are 110 specimens from Tavoy, 

 Mergui, Madras coast, Travancore coast, Karachi, Mekran coast, and 

 Persian Gulf. 



1. A variety from Madras — represented by a single male — has the greater 

 part of the carapace covered with grannies, four of which — one in the mid-gastrio, 

 one in the mid-cardiac, and one on either branchial region — are much enlarged ; and 

 has chelipeds a good deal less than twice the carapace in length. 



2. A variety from the Nicobars — also represented by a single male — has the 

 whole carapace, except the front and the anterior limit of the gastric region, very 

 closely covered with large granules much as in the next species. 



69. Philyra verrucosa, Henderson. 



Philyra verrucosa, Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 399, 

 pi. xxxvii. figs. 10-12. 



Differs from P. scabriuscula, (Fabr. ), adults of both sexes being com- 

 pared, only in the following characters : — 



1. The carapace is irregularly oval rather than discoidal, espe- 

 cially in the female, owing to the greater lateral bulging of the branchial 

 regions. 



2. The whole dorsal surface of the carapace, except sometimes 

 the front, is closely covered with beadlike granules, winch are larger 

 posteriorly, and one of which — somewhere near the middle — is usually 

 enlarged. 



3. A slight transverse dorsal indentation separates the hepatic 

 from the branchial region on either side, but there is no independent 

 dorsal bulging of the latter. 



4. The branchio-cardiac grooves are narrow and deep. 



5. The front is divided into two lobes by a broad shallow groove : 

 the fissure in the roof of the orbit is indistinct, so that the external 

 orbital angle is not sharply pronounced. 



6. The whole surface of all the thoracic sterna is closely beaded, 

 and the surface of the exopodite as well as of the outer half of the 

 endopodite of the external maxillipeds is granular. 



245 



