45 
which only five appeared in the fall of 1895, the remainder appearing 
in May, July, and August, 1896. Active larvae of this species were 
found feeding upon the remains in old cocoons in the middle of Decem- 
ber, 1896, and remained rather active for several weeks in spite of cold 
weather. 
Living puparia of one of the species of Sarcophaga were found in 
the old cocoon masses of the Orgyia in December, 1896, and nearly all 
of the specimens of both species issued in July and August, 1896. 
The other Sarcophagid, Helicobia helivis (Towns.), originally reared from 
a snail (Helix thyroides Say) by Mr. H. A. Surface, Warren County, 
Ohio, seems to be a general scavenger after all. Eighteen specimens 
were reared in October, 1895, from cocoon masses of the Orgyia, and 
three more July 27, 1896. It is a widespread species, and Mr. Coquillett 
Fig. 24 — Gaurax anchora : a, larva ; b, anal segment of same ; c, spiracles of same ; d, puparium ; 
/, antenna of same — a, d, e, enlarged; b, c, /, still more enlarged (original). 
adult; 
has recorded it from Charlotte Harbor, Florida, Mississippi, Illinois, 
Los Angeles, Cal., Ohio, and the District of Columbia (Proc. Acad. 
Kat. Sci. Phil., 1895, p. 317). 
The four species of Phora were not reared in large numbers. Of 
P. nigriceps about thirty were bred from dead larva 1 of Orgyia at the 
end of July, 1896. Of P. incisuralis five specimens were reared Sep- 
tember 1, 1896. Of P.fasciata eight were reared July 28 to 30, 1896, and 
of P. agarici one specimen was reared September 30, 1895, from discol- 
ored chrysalids of Orgyia collected September 13, while on October 28 
of the same year about a dozen specimens were reared from another 
discolored chrysalis, also found on September 13. The facts gained by 
the rearing of these four species of this genus present no positive 
evidence on the question as to whether Phora may ever attack living 
insects. 
Of the Limosina a single specimen was reared September 2, 1896, 
