95 
and pupa were placed together in a tin-box cage, and July 3 he saw the 
maggot feeding on the pupa. By July 6 nothing but the shriveled pupal 
skin of the grub remained and the larva appeared to be noticeably larger. 
It pupated previous to July 16, and the adult which issued between 
August 6 and 9 was determined by W. R. Walton as Deromyia winthemi 
(Pl. VIII, Fig. 31). Dr. Fox also reared this asilid from a pupa found 
in the soil at Tappahannock, Va., June 28, 1915, the adult issuing July 
16, 1915. 
DEROMYIA DISCOLOR Loew 
Mr. Harrison E. Smith reared this species at Wellington, Kan., 
July 1, 1913, from a larva picked up behind the plow March 11, 1913, and 
Mr. J. A. Hyslop collected larvae behind the plow at Wolfsville, Md., 
May 2, 1913, from which he obtained pupae June 13 and 14 and two 
adults of D. discolor July 10 and 11, respectively. Aside from the fact 
that the fields were infested with white-grubs, there is no evidence that 
they were predaceous. 
DEROMYIA UMBRINA Loew 
Although we have no positive proof that this or the preceding species 
is predaceous on white-grubs, the fact that they are found in fields 
infested with grubs and the further fact that the very closely related 
Fic. 25. Deromyia umbrina Loew, eggs, much enlarged. 
species D. winthemi is known to attack them are indicative of their 
habits, and the notes herewith given seem pertinent. 
A male and female D. umbrina collected at Lafayette, Ind., by Mr. 
R. J. Kewley, were placed in a chimney cage at 6:00 p. m., August 1, 
1914, and by 3:30 p. m., August 4, 93 eggs were laid, the female dying 
the following day. The eggs were laid singly or in groups of 2 to 13, 
a few on the surface, but most of them in the soil at various depths up 
to 3% inch, the majority about % inch deep. Some were placed in cracks 
in the dirt, and others in little cavities made by the female. The egg 
