POSTSCRIPT. 



When my work was nearly printed, I received permission 

 from Professor Hine and from the authorities of the Univer- 

 sity of Chicago to deposit in the National Museum the holo- 

 types from their collections. Mr. Harbeck and Mr. Sturte- 

 vant had given the same permission at an earlier date, and I 

 had made my manuscript conform to this ; but in depositing 

 the Hine and Hough (University of Chicago) material I am 

 contradicting the statement in the text in about ten cases. It 

 is, perhaps, needless to commend the public spirit of all who 

 have . so generously contributed to keep this great collection 

 of type material almost intact. 



Dr. R. R. Parker's work on the Sarcophagidae of New 

 England was in two parts, of which the first was published in 

 the Proceedings of the Boston Society of Natural History, as 

 mentioned on page 6 ; the second and larger one, containing 

 several new species, proved too large for early publication and 

 was much delayed on this account. Dr. Parker was finally 

 obliged to divide it, but succeeded in placing the more im- 

 portant sections in the entomological journals. " These delays 

 had the unfortunate efifect of bringing two of his parts into 

 print too late for me to change the names I had adopted for 

 the corresponding species in my work. So my TJielodiscus 

 indivisiis is antedated by his Sarcofahrtia ravinia (Psyche, 

 xxiii, 1 31-139, figs.) ; and my Sarcophaga larga by his 6". 

 pachyprocta (Jour. N. Y. Ent. Soc, xxiv, 171-175). My 

 principal regret in this matter is that his excellent work could 

 not have been printed in its entirety. 



European specimens of Sarcophaga scoparia in Dr. Par- 

 ker's collection, recently seen by me, indicate that our North 

 American form is entitled to a varietal name, which will be 

 bestowed by Dr. Parker in a forthcoming paper. 



The peculiar habit in several Sarcophagas of attacking 

 grasshoppers on the wing for larviposition is mentioned in the 

 First Report of the U. S. Entomological Commission (Wash- 

 ington, 1878), pp. 319-322, although there attributed to a 

 Tachina. Mr. J- R- Parker, at Huntley, Mont., Aug. 12, 1910, 

 captured the following species attacking flying grasshoppers 

 in this way: Sarcophaga sinuata, hunteri, kellyi, davidsoni, 

 and two undetermined. Prof. R. A. Cooley made the same 

 observation. 



