332 



CUMAD^E. 



Bodotria arenosa, mihi 



Description. Tlie carapace is almost oval, rostrum awanting, that part of the 

 carapace being merely rounded off. The superior antennae are quite obsolete. 

 The inferior pair are of considerable length, and are terminated by means of 

 two long spines. 



The ambulatory division of the first pair of legs has the first joint of a very great 

 size, being very much flattened and slightly curved. The four remaining joints, 

 together with the internal thumb, are very spiny. The natatory division of 

 the leg is six-jointed, the four last joints giving rise to as many long spiniferous 

 spines, which are articulated at their distal halves. The external edge of these 

 spines are spiniferous at the articulated half only. The ambulatory division of 

 the second pair of legs has the first segment very broad, and tapering gradually 

 towards its distal extremity, from which arises a very long, articulated, and 

 spiniferous spine. 



The abdominal finlets are five in number. They are composed of two parts, viz., 

 the first or pedicle, and the second or bifurcation ; the pedicle is of considerable 

 length, from the extremity of which there arise two scales, which are armed 

 on their margins with long spiniferous spines, which are much longer than the 

 finlet itself. 



The first segment of the caudal styles tapers very slightly, and the two terminal 

 scales are each of them single-jointed, and end by means of very fine points. 

 The external is armed at its extremity with two spines. Long, five lines. 



This genus forms doubtless a link between the Stomopoda of M. Edwards and the 

 higher Crustacea. 



