POTAMI^NA. 



01 



Genus POTAMI^NA, nov. 



TN'pe, 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, iiearer to 

 eyes than to each other ; antenna? 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 coxpb, 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 

 punctate, oblique, and centrally longitudinally impressed, the 

 lateral 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 

 laterallj' 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 tibise shortly sparingly hirsute ; abdominal segments 

 as in LacTinoplioriis (vol. ii, p. 68), to which Potamio'na is allied. 



283i5. Potamisena aurifera. sp. n. 



Black, shining ; basal half of fourth joint of antenna^ a lateral 



Fig. 30. — Votamiana aurifera. 

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



