64 
had a Mutilla egg transversely arranged on its dorsum between 
the first and second thoracic segments. The egg was semi- 
transparent whitish, about five times as long as thick, some- 
what curved, rather broadly rounded at one end and conical at 
the other. Under a hand lens its surface showed numerous 
pointed granulations. The second parasitized Tiphia had an 
active Mutilla larva a day or two old, on the underside of the 
body. Like the egg, its skin was also finely roughened. It re- 
quired about four days to become full-fed, consuming all its 
prey. It failed to spin a perfect cocoon, but remained as a 

Fig. 28. Tiphia lucida, Aedeagus; 2, side view of median 
portion; 3, side view of lateral portion. 
quiescent, dull whitish larva for about eight days before changing 
into a pupa, which a few days later hatched into a female wasp. 
I succeeded in getting several other Mutilla ovipositions. One 
cocoon contained two Mutilla eggs. The cocoon’s envelope is 
not visibly perforated by the ovipositor of the parasite. 
Tiphia segregata Crawford. 
Length 7-10 mm.; black 
This insect (Fig. 29) parasitizes the grubs of several species 
of Anomala and lays a comparatively small egg to one side near 
the ventral tip of the abdomen between segments 7 and &. Be- 
sides occurring on the lowlands about Los “Bafios, segregata was 
also found at Baguio, in central Luzon, at an altitude of nearly 
