122 PSYCHE [December 
robust, flat above, conic-ovate, shorter than the thorax and variably convex below 
(ventrad), sometimes not noticeably so; segment 2 nearly a half the total length of 
the abdomen, segment 3 next longest but only a third the length of segment 2, seg- 
ments 4 and 5 subequal, very short, both together not quite as long as segment 3; 
segment 6 slightly longer than 4 or 5, the latter being intermediate in size between the 
two; segments 7 and 8 minute, the latter conic. 
Wings hyaline, the fore wings (Fig. 3) rounded apically, without marginal 
5 
Fig. 3. Fore wing of Nasonia brevicornis Ashmead, female, greatly enlarged (discal cilia omitted). 
Fig. 4. Antenna of Nasonia brevicornis Ashmead, male, greatly enlarged; pubescence omitted. 
Fig. 5. Fore wing of Nasonia brevicornis Ashmead, male, greatly enlarged, (discal cilia omitted; 
drawn on same scale as female wing. 
fringes, but usually ciliate in the disk, naked, however, proximad of the apical end 
of the submarginal vein, the latter over twice the length of the marginal vein which is 
slightly longer than the postmarginal vein and somewhat more so than the stigmal 
vein; postmarginal vein slenderer, slightly longer than the stigmal vein which is 
slightly curved with a small, truncate club and uncus. Submarginal vein of hind 
wings thickened and confluent with the costal margin proximad, for not half its 
length, then descending, twice or more longer than the marginal vein, the disk of the 
wing ciliate, and the caudal margin with short cilia. 
Tarsi 5-jointed, the tibial spurs single. Marginal vein of fore wing normal, 
not thickened, uniform in width. 
Last joint of maxillary palpi as long as the combined lengths of the other 3 joints, 
ornearly. Labial palpi 3-jointed, the intermediate joint minute, the others subequal 
but the distal joint somewhat the longest of either of the three. 
Male: 'Vhe same in general bodily structure as the female, but slenderer, smaller, 
the fore wings entirely differently shaped and smaller, being much the broadest just 
