61 
area; upper half of propleura highly polished and smooth, the lower 
half rather coarsely obliquely lineolate. 
On Anomala grubs. 
T. segregata Cwfd. 
Punctures on vertex more numerous than in segregata, but considerably 
thinner than in /weida; carinae on propodeum sharply defined, with- 
out punctures alongside, the sublateral carinae distinet and reaching 
a little beyond the spiracles, and enclosing a distinetly sericeous area; 
truncated part of propodeum with a rather distinct median carina; 
hind femora on inner surface very highly polished and with the pune- 
tures slightly more prominent than in segregata; hind tibiae as in 
segregata except that the lower half of their inner surface is almost 
entirely bare, and polished without punctures; propleura finely 
obliquely lineolate on upper half, more coarsely so below. 
On Autoserica grubs. 
T. ashmeadi Cwfd. 

Fig. 26. Tiphia lucida, 9, X 
Tiphia lucida Ashmead. 
Length 8-10 mm. ; black. 
This insect (Fig. 26), originally described from Manila, is the 
commonest Tiphia around Los Banos. It was abundant from 
June to September at the College of Agriculture, and occurred 
chiefly on the patches of sweet-potato vine (/pomoea batatas 
(L) ). It appears to be a lowland form. It parasitizes the grub 
of Adoretus, which it temporarily immobilizes and lays an egg 
transversely on the ventral side of the body, to one side of the 
middle, in the incision separating the last thoracic from the first 
