85 
others issuing July 15 and August 4 from grubs of Serica sp., and one 
August 9, from a grub of P. drakit. He writes me January 21, 1918, 
that “Myocera cremides? appears to prefer Serica larvae and is evident- 
ly an inhabitant of semi-wooded areas.” 
The species is wide-spread, occurring according to published records 
and specimens in Aldrich’s collection, from New Jersey to Oregon, the 
states and provinces represented including New Jersey (under the name 
simplex in ‘““New Jersey Insects”), Indiana, lowa, Minnesota, Manitoba, 
S. Dakota, Idaho, and Oregon. 
ProsENA (MocHLosoMa) LACERTOSA v. d. Wulp 
This dexiid fly was found by Mr. C. H. T. Townsend during August 
1909, abundant in pastures near Colonia Garcia, Mexico, principally 
on flowers of Rudbeckia. The flies, according to Mr. Townsend, were 
at the time of his visit issuing in great numbers from puparia in the 
soil, and the pastures in the vicinity were heavily infested with white- 
grubs, from which it was concluded that P. lacertosa is parasitic upon 
white-grubs (77). This inference is probably correct, and this species 
is apparently of considerable importance in Mexico as a white-grub 
enemy. 
Hymenopterous Enemies Recorpep 
OPHION BIFOVEOLATUM Brullé 
This large, slender-bodied, reddish brown ichneumon-fly (Pl. VII, 
Fig.. 30), which is distributed throughout the United States, has not 
been reared by us from larvae actually found attacking grubs. The 
first referenee to this insect as an enemy of white-grubs seems to have 
been made by Dr. C. V. Riley (63), who based his record on observations 
made by Prof. F. M. Webster at Lafayette, Ind. Professor Webster 
obtained a number of specimens of this species from a cage containing 
white-grubs, and this appears to be the only reason for the conclusions 
published by Riley. Dr. S. A. Forbes (26) records it as a parasite of 
grubs, basing his conclusions on his office notes—which he kindly permits 
the writer to publish here. The first note is as follows: “Leroy, Ill. 
Sept. 1, 1906. E. O. G. Kelly. Ophion cocoon found in a sod field with 
part of the skin and head of Lachnosterna grub enwrapped with cocoon. 
To rear adult. April 27, 1907. Ophion adult [later determined as O. 
bifoveolatum| has emerged, pinned it with cocoon as. accessions No. 
37368. Davis.” Another note furnished by Dr. Forbes reads—‘“Ophion 
sp., Kelly. Mackinaw, Ill, 10/06. Sending to insectary.” 
The adults issue for the most part during April, and the larva is 
probably ectoparasitic, as is Tiphia. The larva becomes full-grown and 
spins its cocoon previous to August, passing the winter within the cocoon, 
which is dull brownish, frequently darker at the extremities, smooth and 
uniform in thickness at the ends as is the cocoon of Elis, but much 
shorter, measuring about half an inch in length and a quarter of an inch 
in thickness. 
