590 SIDNEY I. KORNHAUSER 
individuals of both sexes belonging to the following species were 
prepared and mounted in balsam as was done earlier for Thelia 
bimaculata (figs. 24 and 28): Thelia uhleri Stal, Glossonotus 
acuminatus Fabr., Glossonotus godingi Van D., Telamona 
querci Fitch, Telamona reclivata Fitch, Archasia _ belfragei 
Stal, and Carynota mera Say. 
The one outstanding characteristic of the male genitalia of 
Thelia bimaculata which distinguishes it from the others studied 
is the shape and length of the oedagus. All the Telamonini 
have the oedagus bent sharply dorsad toward the anal tube. 
At the bend, in the forms above named with the exception of 
Thelia bimaculata, the oedagus is narrowed and becomes thicker 
and bulbous toward the distal end. Viewed in profile, the 
inner surface of the portion dorsad to the bend is practically a 
straight line, whereas the outer or free surface is greatly curved. 
Thelia uhleri Stal, the nearest relative to Thelia bimaculata 
Fabr., also possesses a bulbous oedagus narrowed at the bend 
dorsad; but T. bimaculata has a slender almost tubular oedagus, 
not bulbous at its distal end or narrowed at the bend dorsad. 
Its inner surface viewed in profile is not a straight line, but is 
curved so as to be practically parallel to the outer or free surface. 
In comparison to its diameter, the oedagus of Thelia bimaculata 
is longer than in any of the other forms studied, and its distal 
third bends cephalad as well as dorsad. In parasitized individ- 
uals the oedagus is reduced in length much more than in diam- 
eter. The inner edge shows a decrease in its curvature so that 
the thick bulbous form found in the other Telamonini becomes 
approximated in the reduced organ. Thus the specific form of 
the oedagus so characteristic for Thelia bimaculata is lost. 
The female gonapophyses of the various Telamonini avail- 
able were likewise studied. Of all the forms Thelia bimaculata 
had the bluntest, most rounded tip at the distal end of its ovi- 
positor. The ends were found to be strongly chitinized and 
reinforced by longitudinal ribs. In all the forms, with the 
exception of Thelia bimaculata, near the tip of the ovipositor on 
its ventral border there is a thin translucent area. This is 
directly anterior to a chitinous rib which runs diagonally on 
