1899.] A. Alcock — Carcinological Fauna oj India. 97 



In the foregoing lists tlie genera known to me by autopsy aro 

 marked with an asterisk and Indian genera aro printed in Roman 

 type. I have made no attempt to split the Subfamilies into 

 " alliances " as I have not sufficient material at my disposal for such a 

 purpose. 



Subfamily THIIN^. 



Kraussia, Dana. 



Kraussia, Dana, Silliman's Amer. Journ. Sci. and Arts. XIII. 1852, p. 120, and 

 U. S. Expl. Exp. Crust, pt. I. p. 300. 



Carapace not much broader than long, not concealing the first 

 three abdominal terga even in the male, subcircular but with the 

 antero-lateral borders much longer than the postero-lateral, and the 

 latter rather strongly convergent and slightly concave : the regions not 

 defined. 



Front well separated from and prominent beyond the inner supra- 

 orbital angles, almost horizontal, cut into two lobes which may, or may 

 not, be again divided into two lobules. 



The antennules fold alongside their basal joint, much nearer the 

 longitudinal than the transverse. 



The basal antenna-joint touches the front and occupies all the 

 space between the antennulary pits and the orbit ; the flagellum, which 

 is short and slender, stands in the orbital hiatus. 



Buccal cavern squarish, a little elongate : the external maxil- 

 lipeds — of which the merus is not elongate — slightly overlap the 

 epistome, which though short and sunken is well enough defined. No 

 ridges on the palate to define the efferent branchial channels. 



Chelipeds massive, short and stumpy with particularly stumpy 

 fingers. 



Legs short and stout, ending in blade-like dactyli. 



The abdomen of the male consists of 5 segments, the 3rd-5th 

 terga being fused. 



Sternum narrow. 



Key to the Indian species of Kraussia. 



I. Carapace somewhat broad, its frontal and antero-lateral borders 



conspicuously dentate : front bilobed K. Integra, 



II, Carapace somewhat elongate, its frontal and antero-lateral 



borders minutely denticulate : front four lobed K. nitida. 



1. Kraussia Integra (De Haan). 

 Cancer {Xantho) integer, De Haan, Faun. Japon, Crust, p, 66, pi. xviii. fig, 6. 



J. II. 13 



