388 Carcinological Fauna of India. 



80. Hymenicus Wood-Masoni, n. sp. 



Body and chelipeds tomentose. Carapace dorsally flat or sunken, 

 longer than broad, circular without the rostrum, the regions demarcated 

 by fine grooves. 



The front, which is delimited from the rest of the carapace by a 

 fine raised line running across its base between the eyes, is cut into 3 

 prominent teeth, the middle one of which is somewhat the largest. 

 The antennules fold beneath the front. 



A small post-ocular denticle : a large tooth on the lateral border of 

 the carapace above the base of the 1st pair of legs, another, hardly 

 smaller, midway between this and the front, a third, much smallei", 

 midway between this and the post-ocular denticle. 



Chelipeds in the adult male more than twice the length of the 

 carapace, very much stouter than the legs, the palm being specially 

 massive. When denuded, the upper border of the arm is dentate and 

 there is a stout spine near the far end of the outer border of this joint : 

 there ax*e several sharp tubercles on the upper surface of the wrist, the 

 outer surface oi the palm is reticulate in places, and the fingers which 

 are stout and as long as the palm, have elegantly interlocking teeth. 



In the female the chelipeds are considerably shorter and, though 

 stouter than the legs and formed on the male pattern, are not nearly so 

 stout as in the male. 



The legs have long, curved dactyli, which ai'e armed with small 

 recurved teeth at the distal end of the posterior border : the 2nd pair, 

 which are a little the longest, are over 2| times the length of the 

 carapace 



Carapace of male (including rostrum) 7'5 millim. long and 6 broad. 



Specimens were collected by the late Professor Wood-Mason at 

 Port Blair in the Andamans, and at Port Canning near Calcutta. 



81. Hymenicus inachoides, n. sp. 



Carapace somewhat tomentose, flat, elongate- triangular, ending in a 

 rostrum of three long teeth of which the middle one is about a third the 

 length of the rest of the carapace, the other two being more than half 

 the length of the middle one. The regions are all well defined by 

 grooves. No spines on the lateral borders of the carapace. Post-ocular 

 denticle hardly distinguishable. The antennules fold beneath the front. 



Chelipeds of the adult male somewhat tomentose, not 1^ times the 

 length of the carapace : arm slender, with a tooth near the distal end of 

 the outer border ; palm short, high, pi'oduced and somewhat swollen 

 below ; the fingers a little longer than the palm, stout, and finely 

 toothed. 



730 



