25- 
Of the parasites bred most of them are peculiarly orthopterous ene- 
mies belonging to the genus Sarcophaga. Of the flies reared there 
were six Sarcophagids, two Tachinids, and one Muscid. The identifica- 
tions were made by Mr. Coquillett and are as follows: Sarcophaga sar- 
racenew Riley (fig. 9), S. assedua Walker (fig. 10), S. sp. near 7ncerta 
Fie. 10.—Sarcophaga assidua: Puparium at left; adult in middle, with enlarged antenna; larva with 
enlarged parts at right—enlarged (from Howard). 
Walker, S. sp. near cémbicis Towns., S. hunteri Hough, /Helicobia 
hdicis Towns., Euphorocera claripennis Macq. (fig. 11), Acemyta den- 
tata Coq., Lucilia cesar Linn. (fig. 12). 
Of the above species [elicobia helicis Towns. was the commonest fly 
bred. By isolating specimens of the differential locust, in order to 
derive information relative 
to its life history, a part of 
the life history of //elico- 
bia helicis was incidentally 
reached. May 26, 1900, a 
specimen of grasshopper of 
the third stage was placed in 
cage. The last three molts 
were successfully accom- 
plished and a few days after 
this female—for the speci- 
men proved to be a fe- 
male—had reached maturity 
a male was given her. Mat- 
ing took place twice and a Fig. 11.—Euphorocera claripennis: Adult with enlarged 
single pod Glal se eggs was antenna and with empty puparium at right—enlarged 
deposited. August 16,1900, ~ (tom Howard). 
the female died and was placed in a separate tube cage for further 
examination. During the period between August 28 and September 
1 six maggots of //elicobia helicis emerged from the body of this grass- 
hopper. Within forty-eight hours all had entered the puparia, and 
on September 17 the last of the flies appeared. From the above 
