31 
to on page 34, second edition Bulletin No. 10 of this division, is probably 
T. orgyic, but we are unable to substantiate the statement that it has 
been reared from eggs of O. lewcostigma. 
Hemiteles townsendi Ashmead. 
With the consideration of this species we begin the hyperparasites, 
leaving the primary dipterous parasites to be considered after all of 
the Hymenoptera have been treated. So far as known, all of the spe- 
cies of Hemiteles, as well as of at least most of the genera into which 
it was subdivided by Foerster, are hyperparasites. They are reared 
from all sorts of lepidopterous larvie and pup:e, from dipterous puparia, 
from oak galls, and from spider cocoons, but in every case, so far as the 
published records go, where the exact host relationships have been 
determined, they have been found to be hyperparasitic. There is a 
species, however, at Washington which is very deceptive in this regard. 
It issues from the egg cocoons of certain spiders, and a close examina- 
tion of the cocoons from which it issues fails to show even the frag- 
mentary remains of a primary parasite. 
In the case of the present species (Hemiteles townsendi) no such diffi- 
culty exists. The type specimen was collected in Michigan by Mr. 
Townsend, and in December, 1889, another specimen was reared from 
the puparium of a dipterous insect at Washington. There have been 
four specimens reared from the cocoons of the tussock moth. All four 
issued in early November, 1895, and it is practically safe to say that 
they came from contained puparia of one of the Tachinid parasites of 
this insect. Of the four specimens, three are females and one is male. 
Bathythrix meteori n. sp.! 
A number of specimens of a very distinct Hemiteline were reared 
during 1896. The first specimen issued March 5 from a cocoon of 
Meteorus communis, collected in December, 1895. All of the others, 
thirteen in number, issued between July 21 and August 5, 1896, from 
the mass of 624 cocoons of the Orgyia collected between June 30 and 
July 8, 1896. It is worthy of remark that not a single specimen of the 
Meteorus was reared from this lot of cocoons. Of the thirteen specimens, 
eight were females and five males. 
Bathythrix pimple n. sp.’ 
Four specimens of this insect were reared August 29, September 18, 
28, and 30, 1895, from masses of cocoons of the Orgyia under observa- 
tion in the rearing cages. Its exact host relationships are not known, 
2 Described in the appendix, page 54. 
