DESCRIPTIONS OF NEW HYMENOPTERA, 273 



POECILOTIPHIA, gen. nov. 



$ ForewiDgs with two transverse cubital nervures which enclose 

 a long cellule in the middle, this cellule receiving both the recurrent 

 nervures. Radial cellule closed at the apex ; the transverse basal 

 nervure is interstitial ; the discoidal cellules are large ; in the hind wings 

 the radial, cubital and discoidal nervures are continued to the edge of 

 the wings and not abbreviated as in Tiphia. Mandibles bidentate, the 

 lower tooth much larger than the upper. Pro-thorax large, transverse 

 at the base. Legs thickly pilose ; the middle with two spurs on the 

 tibia ; the claws simple, eyes large, sinuate on the inner side. Basal 

 abdominal segment with a short, but distinct, peduncle at the base ; 

 the dilated part rounded on the sides, narrowed at the base and apex ; 

 the second segment distinctly narrowed at the base, becoming gradually 

 wider towards the apex. The last abdominal segment is large, widely, 

 roundly and deeply incised at the apex, the sides forming sharp teeth, 

 between which the long curved anal spine projects. 



The antennse are stout ; the apex of the clypeus is broadly rounded; 

 the occiput is transverse and is margined ; the scutellum is flat ; the 

 median segment bulges out roundly in the middle ; the second and third 

 abdominal segments are constricted at the base and apex ; they are 

 punctured and covered with stiff hair as in Tiphia ; the legs are 

 short, slender and thickly covered with long stiff hairs ; the middle 

 pair have two spurs ; the median segment is without longitudinal 

 keels ; it is transverse at the apex, with the sides bulging out 

 roundly. 



The afl&nities of this genus are clearly with Tiphia and Myzine ; 

 the character of the alar neuration is sufficient to separate it from 

 either ; Myzine has three transverse cubital nervures, and the recurrent 

 nervures are received in different cellules ; its affinities are closer 

 with Tiphia, but in it also the recurrent nervures are received in dif- 

 ferent cellules, which are also differently formed ; Tiphia differs further 

 in the middle tibiae having only one spur • the occiput in our genus is 

 transverse, not narrowed gradually, it differing also in having a dis- 

 tinct margin ; the apical nervures in the hinder wings are more com- 

 plete, extending to the apex and not abbreviated as they are in Tipliia 

 and, to a less extent, in Myzine. The white markings on the abdomen 

 remind one of Thynnus. 



