160 THOMAS SAY FOUNDATION 



in the material; it appears to diminish northward, as 

 there are no Canadian specimens in what I have ac- 

 cmimlated (Gibson, however, reports it from Mon- 

 treal in his 1913 Record, — Report Ent. Soc. Ont., 

 1913, 122). 



Bred material is abundant; most of the records 

 known to me have been included in my article on The 

 Economic Relations of the Sarcophagidce, in Journal 

 of Economic Entomology, viii, 242-240. It is very 

 likely that the species breeds largely in dead insects, 

 and some of the records were made without allowing 

 for this possibility. However, the species is a true 

 parasite in grasshoppers and in Eleodes, and prob- 

 ably quite often in Lepidoptera and other insects. 

 With this element of uncertainty to be kept in mind, 

 the following are the cases of rearing recorded for the 

 material I have examined. 



Two males and four females from adult Cory- 

 dalis cornuta at Washington (Bur. Ent. no. 422-xo) ; 

 issued July 14, 1894. 



Three males, two females from Cicada tibicen 

 collected at Waterfield, Va. (Bur. Ent. no. 2851-0 ) ; 

 issued Sept. 4, 1894. 



Two females from a jar that had contained 

 larva? of Calosomasp., at Washington (Bur. Ent. no. 

 3068-0) ; issued Sept. 13, 1894. 



One of each sex from hcucania unipuncta ( Bur. 

 Ent. no. 35c) ; issued July 17, 1880. 



Four males, eight females, from adults of La- 

 chnosterna arcuata in breeding cage at Washington; 

 issued July 12, 1893. These were probably scaven- 

 gers (Bur. Ent. no. ol03-a). 



Two females from adults of the beetle Dinapate 

 wrightii in breeding cage in Washington; issued Sept. 

 11, 1897. Probably scavengers (Bur. Ent. no. 

 7380-O). 



Numerous specimens, Wellington, Kan., bred 

 from grasshopjDers by E. G. Kelly (Webster Nos. 

 7393, 7398) ; mentioned by Kelly in Journal of Agri- 

 cultural Research, ii, 441. 



