480 R. OSTEN SACKEN 



the character of its coloring. Face moderately excavated : anten- 

 nal furrows diverging , placed near the eyes ; cheeks narrow ; 

 third antennal joint about 3 times longer than broad , with 

 nearly parallel sides, rounded at tip ; arista short-feathery- Ocelli 

 distinct, placed on the vertex. The cephalic bristles are as fol- 

 lows : one each side near the upper corners of the eyes (in the 

 9 I perceive a smaller bristle , behind them , on the occiput) ; 

 a pair of much weaker bristles, one each side, lower dowu on 

 the front , near the orbit ; a pair of minute bristles on each 

 side of the black frontal spot, not far above the antennae. Palpi 

 broad, spatulate. Thoracic furrow crossing the thorax, from one 

 side to the other. The thoracic bristles are but fèw ; 1 perceive 

 (in the c/') one each side back of the humeral callosity ; ano- 

 ther at each end of the thoracic furrow ; and three each side 

 between the furrow and the scutellum ; on the pleurae, a very 

 weak bristle is visible a little in front of the root of the wings. 

 Scutellum triangular with four bristles. Abdo^nen (4-jointed in 

 the 9 , 5-jointed in the 9 ) elongate , attenuated anteriorly, wi- 

 thout being pedicelled (not unlike the abdomen of an Ichneu- 

 mon) ; the first joint nearly as long as the three following taken 

 together (two joints must be soldered together here ; the suture 

 is distinct on the ventral side); the three following joints, in 

 the c/', are of nearly equal length ; in the 9 they gradually 

 diminish in length. Hypopygium of the male small, bent under 

 the abdomen. Ovipositor of the female funnel-shaped ; (in the 

 specimen, which I examined, the two inner joints were exerted, 

 so that the whole ovipositor was as long as the abdomen). The 

 middle pair of legs is the longest and strongest. All the femora 

 have short, stiff bristles on the underside on the distal half, but 

 they are more numerous on the middle pair ; (on the front fe- 

 mora of A. determinata o^ 9 , I perceive but one minute spine; 

 in the c/' of ^. selécla, two ; the numbers may however be va- 

 riable, especially on the hind and middle femora). The venation 

 is normal. The auxiliary vein is closely approximated to the 

 first vein ; it stops abruptly upon reaching tlie stigma and its 

 connection with the costa is indistinct, coinciding with the edge 



