476 



M emoù s of the Indian Museum. 



[Voi,. V, 



and carpus have the inner margins thickly fringed with tufts or short transverse rows 

 of spinules, as in the case of many other species. The second and third pairs are 

 similar to the first and have the inner margin of the merus and carpus almost or 

 quite as thickly fringed with spinules. The remaining legs increase slight^ in length 

 posteriorly, the seventh (fig. 25) being the longest; in all of them there are several 

 large spinules at the outer distal angle of the ischium, merus and carpus, and others 

 on the inner margins especially of the merus and carpus, but these are comparatively 

 few, and well separated, instead of being densely crowded together as in the first 

 three pairs of legs. 



In the female the thoracic legs bear only a small number of setae on the various 

 joints as described for the seventh leg of the male. In the first pair the basal joint 



Alloniscus pigmentatus, Budde-Lund. 



Fig. 26. — First pleopod of male. 

 Fig. 27. — Second pleopod of male. 

 Fig. 28. — Third pleopod of male. 



is rather long, narrowed at its base, and on the outer side shows clearly the flat- 

 tened surface or groove which is present on all the legs of this and of many other 

 species. 



In the first pleopod of the male (fig. 26) the exopod is large, subtriangular, with 

 its outer margin at first convex and then concave near the subacute apex. The 

 whole of this outer margin and a portion of the inner margin near the apex are 

 fringed with a regular row of rather stout spinules, and the exopod appears to be 

 thickened along this margin and also along two other lines nearer the centre as shown 

 in the figure ; this thickening also extends along the basal portion of the inner mar- 

 gin. The endopod is enlarged at the base, having its outer margin very convex, and 

 then narrows somewhat abruptly and curves inwards, gradually narrowing towards 

 the irregularly-shaped extremity; it is strongly chitinised throughout. The male 

 organ proper is single, about half as long as the exopod and narrows regularly with 



