66 
paralyzing it. She may have stung it more than once. The 
actual stinging could not be seen, but the grub quickly became 
quieted, while the 7iphia abdomen could be seen in motion as if 
trying to find the proper place to sting—or perhaps stinging 
more than once. 
As soon as she was satisfied, she crawled around on the grub 
a bit, lengthwise of it, apparently to satisfy herself as to which 
was the posterior end and the correct place to put her egg, for she 
was continually vibrating her antennae, touching the surface of 
the grub continually. Finally after a few moments she seemed 
satisfied with her exploration, and embraced the posterior seg- 
ment transversely, being curved around the dorsal side so that 

Fig. 30. Tiphia segregata, Aedeagus; 2 and 3, side views 
of lateral portion; 4, of median portion. 
the apex of her abdomen came in contact with the right side of 
the grub just below the lateral fold and in the groove between the 
last segment and the one preceding it. At this point she rubbed 
around on the surface of the grub with the apex of her abdomen 
for about a minute, probably spreading on some substance to stick 
the egg in position. Finally the egg was extruded somewhat sud- 
denly. It adhered in the spot prepared, and the 7iphia immedi- 
ately left the grub. 
This was at 3:00 p. m., and the grub had recovered from the 
paralysis in fifteen ae and commenced burrowing into the 
soil of the tin box in which it was placed.” 
While this wasp laid well in captivity, only a small portion 
