292 Canon A. M. Norman and Dr. T. Scott on 



Genus LAoniONTixA, nov. 



Soniewliat like Laoplwnte in general appearance. Ante- 

 rior antennae sliort and composed of about six joints. Outer 

 ramus of posterior antenna3 uniarticulate. First pair of 

 natatory legs nearly as in Laoplionte. Second and third pairs 

 one-branched and more or less rudimentary. Fourth pair 

 two-branched, outer branches tlu'ee-, inner one-jointed. 

 Fitth pair as in Laoplionte. Only one species is known, wliich 

 is described below. 



Laoplwntina dubia, sp. n. 



Length of female about '5 mm., male rather smaller. 

 I3o ly somewhat slender. Antennules of the female short, 

 six-jointed ; iirst joint stout, longer than any of the others, 

 and with a small tooth-like process near the middle of the 

 exterior margin and another at the inner distal angle; second 

 joint shorter than the first and armed exteriorly with a strong 

 ])rojecting tooth ; third rather longer, but less robust than 

 the second ; fourth and fifth very small ; the last joint is 

 longer than the fourth and fitth combined. 



The male antennules are modified for grasping, but the 

 first and second joints are similar to those of the female. 



Posterior antenniB moderately slender, outer ramus small 

 and uniarticuhite. 



First thoracic feet as in Laophonte ; inner branches elon- 

 gated, two-jointed; first joint long and slender, the other 

 short and armed with a long stout terminal claw ; iinier 

 branches very small and uniarticulate and furnished with a 

 few small seta?. Second pair rudimentary, one-branched, 

 each composed o£ a single short but moderately stout joint, 

 bearing a few small setse. Third pair also rudimentary and 

 one-branched, but the branch is two-jointed and bears two 

 spiniform terminal seta?. Fourth pair two-branched; outer 

 branch short, stout, and three-jointed ; the first and second 

 joints bear moderately long and stout spine-like seta? on their 

 outer margins ; the end joint is very small and bears two 

 apical setaj, one long, the other shorter and spiniform ; inner 

 branch small and uniarticulate and furnished with elongated 

 seta?. The fourth })air in the male are smaller than in the 

 female and the inner branches are nearly obsolete. 



The fifth pair in the female moderately large and f'oliaceous ; 

 primary joints broadly triangular and provided with about 

 four plumose setai, one at the apex and three on the inner 

 n.argin; secondary joints ovate, the length being equal to 



