1899.] A. Alcock — Carcmological Fauna of India. 143 



? Gryptodromia pentagonalis, Hilgendorf, MB. Ak. Berl., p. 814, pi. ii. figs. 1-2 : 

 Henderson, Trans. Linn. Soc. Zool. (2) V. 1893, p. 406. 



Carapace etc. with a short velvet-like tomentum. 



Carapace not quite as long as broad, only moderately convex, its 

 surface smooth, its regions very fairly indicated : the *' cervical " 

 groove is distinct, the fronto-orbital region is marked off by a shallow 

 transverse groove that runs from one antero-lateral angle of the 

 carapace to the other, and the front itself is longitudinally grooved. 



Front cut into 3 broad triangular teeth of nearly equal size, the 

 middle one nearly horizontal, but on a much lower plane than the 

 others, which are somewhat upcurved. 



A. tooth near the middle of the upper border of the orbit marks the 

 position of the true inner supra-orbital angle. Outer orbital angle 

 dentiform. Infra-orbital lobe dentiform and prominent. 



True antero-lateral borders with 2 teeth : in the concave space 

 between the 1st (large) tooth and the outer orbital angle a stout sub- 

 hepatic tooth shows up : below this again is a tooth at the outer angle 

 of the buccal cavern. 



On the postero-lateral border, immediately behind the branchial or 

 " cervical " groove, is a tooth. 



Outer surface of wrist nodular : a few nodules on upper border of 

 palm : fingers short and stout. 



The carpus and propodite of the first 2 pair of legs are nodular. 



Last 2 pair of legs short and slender, not nodular, not much more 

 than half the length of the first 2 pair : the 4th (last) pair very little 

 longer than the 3rd. Both end in a strong claw-like dactylus, but are 

 hardly cheliform, although there is a small spine at the end of the 

 propodite of each. 



Abdomen of male with a convex ridge down the middle line. 



In the Indian Museum are 2 males and a female, from the Anda- 

 mans and the Persian Gulf. 



The carapace of the largCvSt specimen is 14 millim. long. 



Distribution : Indo-Pacific Seas from the Red Sea and east coast of 

 Africa to Japan. 



9. Dromia (Gryptodromia) hulUfera, n, sp. 



Carapace etc. covered with a short tomentum. 



Carapace about as long as broad, convex, smooth, " cervical " 

 groove shallow but distinct. 



Front cut into 3 acute rather slender teeth, the middle one of 

 which is on a lower plane and is slenderer than the others. 



An acute spine near the middle of the upper border of the orbit 



