28 BULLETIN 156, U. S. DEPARTMENT OF AGRICULTURE. 
this opinion, as the larve in question from Inman, Nebr., are alive 
at the present writing (October, 1914). 
A gamasid was found attached to the body of an adult of Alaus 
oculatus at St. Louis, Mo., by Mr. E. R. Fisher. This mite avas 
under the wing covers.t. Another mite (Chelifer alaus) is recorded ? 
as a parasite of the adult Alaus oculatus. 
The writer has published * a record of a fly (Thereva egressa Coq.) 
the larva of which actually attacks and feeds upon wireworms. The 
larva was found in a wheat field 
near Pullman, Wash.,and when 
found had its head and first 
four anterior joints within the 
body of a wireworm and was 
eating out the insides. This 
larva was brought into the 
insectary and fed upon wire- 
worms, of which it ate usually 
two a day. On June 10 it 
pupated, and on June 24 the 
adult fly emerged. Two other 
species of Therevide (Psilo- 
cephala aldrichti Coq. and P. 
munda Cog.) were reared by 
the writer from larve taken 
in the field, associated with 
wireworms, in the Pacific 
Northwest. These flies in 
their larval stages are prob- 
ably predaceous on elaterid 
larve. Forbes mentions? 
rearing a parasitic fly from an 
elaterid larva. A Procto- 
Fic. 8.—A horned toad (Phrynosoma douglasii 
douglasii), an enemy of the western wire- trupes has been reared from 
Ses Oz inal an elaterid larva in England 
by Curtis.» In the same work Curtis refers to a similar record by 
Bierkander. 
1U. S. Dept. Agr., Div. Ent., Note 165R, July 21, 1889. 
2Leidy, J. Remarks on the seventeen-year locust, the Hessian fly, and a Chelifer. In 
Proc. Acad. Nat. Sci. Phila. [v. 29], 1877, p. 260—261, June 19, 1877. 
3Hyslop, J. A. Therera egressa. In Proc. Ent. Soc. Wash., v..12, No. 2, p. 98, June 
LD O10: 
4Forbes, S. A. Insects Insects to the Seed and Root of Indian Corn. Univ. of Ill. 
Agr. Exp. Sta., Bul. 44, p. 228, May, 1896. 
> Curtis. John. Farm Insects, p. 181. London, 1860. 
