POTAMI^NA. 61 



Genus POTAMIJENA, nov. 



Type, P. aurifera, Dist. 



Distribution. At present only known from Bengal. 



Body oblong, smooth, not pilose ; head triangular, central lobe 

 projecting in front, with eyes about equal in breadth to anterior 

 margin of pronotum ; ocelli placed close to base of head, nearer to 

 eves than to each other ; antennao somewhat long and robust, first 

 joint shortest and passing apex of head, second joint longest, a 

 little longer than third, third and fourth subequal in length ; 

 rostrum extending to posterior coxae, first joint about as long as 

 head, second and third joints subequal in length ; pronotum 

 distinctly longer than half the width at base which is twice the 

 breadth of head including eyes, anteriorly slightly roundly 

 narrowed, transversely impressed behind middle, before this 

 impression moderately convex, behind the impression coarsely 



Eunctate, oblique, and centrally longitudinally impressed, the 

 iteral margins laminate and suberect ; scutellum about as long as 

 broad, foveately impressed, this impression ridged on each side, 

 the ridges posteriorly united and extending to apex ; corium 

 laterally suberectly laminate, a little sinuate before middle and a 

 little roundly ampliate before apex, apical margin obliquely 

 straight ; clavus coarsely longitudinally punctate ; membrane 

 reaching abdominal apex, veins simple ; anterior femora incras- 

 sate, narrowed to apices, a distinct spine on lower surface beyond 

 middle between which and apex is a series of short strong spin- 

 ules, posterior tibiae shortly sparingly hirsute ; abdominal segments 

 as in Lachnophorus (vol. ii, p. 68), to which Potamicma is allied. 



2835. Potamisena aurifera, sp. n. 



Black, shining ; basal half of fourth joint of antennae, a lateral 



Fig. 30. Potamiana aurifera. 

 spot on each side of pronotum a little behind middle, three lateral 



