1899.] A. Alcock — Carcinological Fauna of India. 149 



which border is serrulate not entire ; in having small spines opposed 

 to the dactyli — at the end of the propodites of the last two pair of 

 legs ; and in being more granular. 



PsEUDODROMiA, Stimpson. 



Pseudodromia, Stimpson, Proc. Acad. Nat. Sci. Philad. 1858, p. 226: Henderson, 

 Challenger Anomura, p. 15 : Ortmann in Bronn's Thier Eeich V. ii., Arthropoda, 

 p. 1155. 



Homalodromia, Miers {nee Homolodromia A. M. Bdw.), Zool. H. M. S. Alert, 

 p. 553. 



Differs from Dromia in the following particulars : — 



The carapace is more elongate : the efferent branchial channels 

 are defined by ridges. 



The fourth (last) pair of legs are as long as, or even longer than, 

 the first two pair. 



The sternal grooves of the female end in two tubercles placed close 

 together near the bases of the chelipeds. 



The front is variable : it may be cut into 3 teeth as in most species 

 of Dromia, or may be bilobed, or may consist of a single triangular 

 tooth. 



Distribution : Cape of Good Hope, Seychelles, Indian Seas. 



N. B. — In Dromia cranioides, Dromia unidentata and Cryptodromia tuberculata 

 the last pair of legs are very little shorter than either of the first two pair. 



Key to the Indian species of Pseudodromia. 



I. Front cut into 2 teeth, each of which is f Qsed at base with 

 the tooth of the prominent supra-orbital margin ; so that 

 the front appears to be formed of two divergent lobes each 

 of which has both its angles acutely produced ... P. quadricornis, 



II. Front in the form of a single triangular tooth ... ... P. integrifrons. 



15. Pseudodromia quadricornisj n. sp. ? 

 Perhaps identical with "Homalodromia" Coppingeri, Miers, loc. cit. pi. L. fig. B. 



Carapace etc. tomeutose : a line of peculiarly long silky hairs forms 

 a fringe or false anterior border to the carapace, behind the deflexed 

 front. 



Front deflexed, dorsally grooved in the middle line, cut into two 

 broad teeth, each of which is fused at base with a broad supra-orbital 

 tooth ; so that the front appears to consist of two large lobes, each of 

 which has its anterior edge concave and its antero-lateral angles acutely 

 produced. 



Carapace in the adult longer than bro:id, slightly convex from side 



