414 
County, Wyo. The larvae were found in a cup-shaped depression in the 
top of a small cone about 20 inches high, situated a few feet from a 
large sulphur mound or " dune," under which the boiling water could 
be heard rumbling Through small apertures in the bottom of the cup 
hot water rose and overflowed the edges, and it was in this cup filled 
with hot water that the larva3 were found. The temperature of the 
water, Mr. Hamm states, was so hot he could not hold his hand in it, 
and he estimates that it was not more than twenty or thirty degrees 
below the boiling point. The larvae belonged to the dipterous family 
Stratiomyiidse. 
It is to be regretted that the temperature in this case was not taken 
with a thermometer for comparison with previously recorded cases of 
this kind. Mr. Bruner cites the statement of a Mrs. Partz (Kept. U. S. 
Geol. Surv. for 1878, Pt. II, p. 358) who saw " in springs in Owens Val- 
ley, Cal., a spider-like animal and small red worms in water having a 
temperature of 124° F." 
To this may be added Mr. H. G. Hubbard's statement in a letter pub- 
lished in the Canadian Entomologist or 1891 (p. 226), that in the Yel- 
lowstone National Park he saw a little Salda running about the edges 
of springs which were actually boiling. He also observed two species 
of IsTebria living under pieces of geyserite " even on the sides of the 
cones of the largest spouting geysers, where they were liable to be 
washed away in a flood of boiling water." Prof. A. S. Packard (Ameri- 
can Naturalist, 1882, p. 599), also records such a case, he having 
received from a Mr. Griffith the larva of a Stratiomyia found in a hot 
spring in Gunnison County, Colo. In this case the temperature of the 
water is stated to have been 157° F. 
APPARENT SUCCESS OF ONE OF THE HESSIAN FLY PARASITE 
IMPORTATIONS. 
In the last number of Insect Life (p. 356) we published a figure of 
Entedon epigonus, the principal European parasite of the Hessian fly, 
and mentioned the attempts which Professor Eiley had made in 1891 
to introduce the species into the wheat fields of this country. One of 
the last acts performed by Professor Eiley before leaving this office in 
May, 1894, was to send a batch of parasitized puparia of the Hessian 
fly, just received from Mr. Fred Enock, of London, to the farm of Mr. 
G. Morgan Eldredge, at Cecilton, Md. During May, 1895, wishing to 
ascertain whether or not this attempt had been successful, we sent Mr. 
William H. Ashmead to Cecilton to make careful observations. He 
found that the parasitized puparia had been placed upon the ground at 
the borders of a wheat field which appeared to be rather badly affected 
by the Hessian fly. The crop was harvested and the land plowed at the 
end of August and planted in winter oats, which at the time of Mr. 
Ashmead's visit were from four to six inches high. After harvest the 
wheat straw was stacked in the immediate vicinity of the place where 
the parasitized puparia were deposited, and a small quantity of winter 
