SARCOPHAGA AND AIJJES 17 



Pantel (La Cellule, xxi, 1 fasc, 105, 1910) 

 states that the larvae of Sarcophaga which are para- 

 sitic in Orthoptera do not show any specialization for 

 this mode of life, and simply lie ainong the tissues of 

 the host, doing little damage until nearly fullgrown, 

 and obtaining oxygen from the body fluid of the host. 



Several entomologists have noted a peculiar 

 larvipositing habit in species attacking grasshoppers, 

 the female fly dashing at the flying host and attach- 

 ing the sticky larva in midair. Evidently se^'eraI 

 species of Sarcophaga do this. 



Many rearing records are enumerated in the fol- 

 lowing pages, most of which have been accumulated 

 within recent years by workers of the Bureau of Ento- 

 mology; each year sees a large increase in the number 

 of such records, and it is to be hoped that there will 

 be an increasing carefulness to eliminate the possi- 

 bility that the supposed parasite did in fact larviposit 

 after the death of the host. The general absence of 

 precaution on this point vitiates a large part of exist- 

 ing records, except in Orthoptera, which the Sarcoph- 

 agas parasitize very freely and commonly. 



Besides the accumulated records of this paper, 

 attention is directed to a summary by the writer in 

 the Journal of Economic Entomologv, viii, 242-216, 

 1915. 



Acknowledgements. 



In addition to the National Museum collection 

 (inclusive of recent additions from the Bureau of En- 

 tomology) , the writer has described the material in the 

 University of Chicago (the Hough collection) ; the 

 American Museum of Natural History; the Univer- 

 sity of Kansas, and that belonging to many individual 

 dipterists who are mentioned in the proper places. 

 Professor Hine's and Mr. A. H. Sturtevant's collec- 

 tions, and that of Mr. H. S. Harbeck, have been espe- 

 cially important in containing undescribed species. 

 Dr. Ralph R. Parker assisted very materially by 



