118 
at Columbia, S. C., and Mr. Rees Philpott reared two of the flies 
May 3, 1915, from a single Phyllophaga beetle found two days before in 
the soil at Delaware, Ohio. 
* We have not studied all the details of the general habits and life 
history of this species, but as far as known they agree with those of 
C. theutis, the fly being nocturnal and laying its eggs on the beetles while 
they are feeding or resting on tree foliage at night. Some of the flies 
issue the same season they parasitize the beetle, that is during July, about 
one month after puparia are observed, but this is probably due to the 
conditions referred to in the discussion of C. thewtis, and in a natural 
Fic. 41. Hutrixa exile Coq., male. 
environment the life cycle is probably normally one year. In cages the 
flies begin to appear soon after they have been removed from the com- 
post heap where they are kept during the winter months, but under 
normal out-of-door conditions emergence is coincident with the appear- 
ance of May-beetles or a little later, their first appearance usually being 
a few days or a week after that of C. theutis. Our records show that 
the male and female beetles are about equally attacked and that from 
one to eight larvae develop in a single host, the average for 183 examples 
being two to a beetle. 
