276 Carcinohgical Fauna of India. 



The chelipeds in the adult male are commonly unequal, having the 

 hand of one side much enlarged and swollen. 



The first and second pairs of true legs are long stout and com- 

 pressed : the last two pairs on the other hand are short and rather slight ; 

 they arise much dorsad of the other legs, and are subchelate, — the four 

 subchelte being so disposed as to enable the animal to hold over its back — 

 as in a loose frame — some sort of defensive or protective object, such 

 as a lamellibranch shell or an inhabited worm-tube. 



The abdomen of both sexes consists of seven distinct segments, the 

 first two and most of the third terga being visible in a dorsal view. 



Key to the Indian species of Dorippe. 



I. The tips of the foliaceous processes that close 

 the endostomial canal, but never the canal 

 itself, may sometimes be seen between the 

 frontal teeth in a dorsal view : — 



1. The greatest length of the carapace is 

 slightly, but distinctly, more than the 

 greatest bi'eadth : — 



i. Carapace nodular and wrinkled : 

 spine at the inner canthus of the orbit 

 ponderous, curved, serrated along the 

 under surface: fourth (last) pair of 

 true legs less than half the length of 



the second (longest) pair D. dorsipes. 



ii. Carapace smooth : spine at inner 

 canthus of orbit rudimentary : fourth 

 pair of true legs more than half the 

 length of the second D. astuta. 



2. The greatest length of the carapace is 



less than the greatest breadth : spine at 

 the inner canthus of the orbit long, 

 slender, acute, straight : carapace 

 smooth : fourth pair of legs from a little 

 less than half to one-third the length of 

 the second : — 



i. Carapace and last two pairs of 

 legs densely pubescent : both edges of 

 merus and posterior edge of carpus 

 and propodite of 1st and 2nd legs 

 densely pubescent in the male D. facchino. 



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