65 
5000 feet. There, Tiphia and other Hymenoptera begin to dis- 
appear in July, with the advent of the rains, but in the lowlands 
it has a more prolonged season, where it appears early in the year. 
The life-cycle is rather long, and the broods probably not more 
than ae OQ, Of three per annum. 
Mr. O. H. Swezey describes the stinging and oviposition as 
eae : 

Fig. 29.  Tiphia segregata, 9, X 7. 
“September 3, 1916, while attending to breeding jars, a female 
Tiphia was noticed to be giving attention to an Anomala grub 
that was on the surface of the soil trying to burrow in. They 
were both removed to a vial for closer observations. 
The Tiphia seemed to be most concerned with the posterior part 
of the grub, continually feeling it all over with her antennae. 
This apparently annoyed the erub, for it would squirm and bend 
backward and try to attack the Tiphia with legs and mandibles. 
It would seem as though she was endangered, but she paid little 
attention to it, just moving out of reach, although it seemed at 
times as though she would suffer injury. Sometimes she would 
crawl around on the grub. 
After about twenty minutes to half an hour the 7iphia gave 
indications of trying to sting the grub. She finally, while perched 
transversely on the middle of the back of the grub, which was 
lying on its left side, extended her abdomen down under and 
forward between the legs nearly to the head and stung the grub, 
