GASTEOSEEICUS. — PISON. 217 



aciculate ; clypeus broad, produced anteriorly in the middle, the 

 apex transverse, the front and clypeus densely pubescent ; the eyes 

 parallel, the ocellar region raised ; median segment with a very 

 slight slope from base and slightly narrowed posteriorly, the apex 

 truncate, above finely transversely striate, the sides densely 

 pubescent ; abdomen with the posterior margins of segments 1-5 

 with transverse pubescent bands, the pygidial area densely 

 pubescent. Black ; the tubercles, the knees, a line on the tibiae 

 behind, with the apical joint of the tarsi, white ,; pubescence 

 glittering silvery, with in some lights a golden tint ; wings hyaline, 

 very faintly fuscescent at apex. 



Var. The apex of the scape and the whole of the tibiae and 

 tarsi white. In one specimen the neuration is aberrant, a portion 

 of the radial nervure being obsolete, the 1st cubital and radial cells 

 are merged in one, 



Hab. Barrackpore, Bengal ; Tenasserim. 5 . Length 6-7 ; 

 exji. 11-13 mm. 



*408. Gastrosericus wroughtoni, Ca77i. Mem. Manch. L. Ph. Soc. (4) 

 ii, 1889, p. 147. 



Head wider than the thorax, pubescent ; thorax punctured and 

 densely pubescent ; abdomen longer than the thorax, the surface 

 finely aciculate ; clypeus anteriorly truncate ; vertex of head 

 indistinctly furrowed, ocelli surrounded by a deep groove ; median 

 segment steeply sloped posteriorly, almost truncate, above and on 

 the sides finely rugose ; pygidial area bare, punctured. Black, the 

 pubescence white, getting greyish on the thorax ; the clypeus, 

 the face in front, the cheeks, legs, and posterior margins of 

 segments 1-5 with silvery pile ; the tegulae, the anterior tibiae and 

 tarsi, and the basal two segments of the abdomen red ; wings 

 hyaline. 



Hab. None given, but probably Poona, Bombay Presidency. 

 § ? (5 ? Length 11 mm. Unknown to me. 



Genus PISON. 



Pison, Spin. Ins. Lig. ii, fasc. 4, p. 255 (1808). 

 Tachybulus, Latr. Gen. Crust, et Ins. iv, p. 75 (1809). 

 Nephridea, Brulle, Ann. Soc. Ent. Fr. ii, p. 408 (1833). 

 Pisonitus, Shuck. Tr. Ent. Soc. ii, p. 79 (1837). 

 Pii^onoides, pt., Smith, Jour. Linn. Soc. ii, p. 104 (1858). 

 Parapison, pt., Smith, Tratis. Ent. Soc. 18G9, p. 298, pi. vi, fig. 6. 



Type, P. (iter, Spin. 



Mange. Both hemispheres. 



Head as wide as the thorax or wider ; mandibles without 

 an incision on their outer margins, small, when closed concealed 

 beneath the margin of the clypeus ; eyes convergent anteriorly, 

 their inner orbits emarginate ; ocelli complete, round ; pronotuin 

 level with the mesonotum or depressed below it ; median segment 



