48 



Willi 



B. H 



crms 



Diptera- 

 Fam. Sarcophagidae 



Lucilia caesar Linne 

 Compsomyia macellaria Fabr. 

 Sarcophaga sarraceniae Riley 

 Sarcophaga assidua Walker 



Cohoptera 



Fam. Staphylinidie 



Creophilus villosus Grav. 

 Fam. Scarabaeidae 



Trox scabrosus Beauv. 

 f am. Silphidae 



Silpha americana Linn^ 



Necrophorus orbicollis Say. 



Necrophorus vespilloides Hbst. 



Necrophorus tomentosus Web. 

 Fam. Dermestidae 



Dermestes vulpinus Fab. 



Dermestes caninus Germ. 

 Fam. Histeridae 



Saprinus pennsylvanicus Payk. 



Saprinus lugens Er. 

 Fam. Calandridae^ 



Sphenophorus ochreus Lee. 



Phytonomus punctatus 



Of the above, the flies are the chief agency, and it is a brief study 

 of these that we shall enter upon. 



II HABITS AND LIFE HISTORIES OF LUCILIA CAESAR, THE COMMON 

 GREEN FLESH FLY; COMPSOMYIA MACELLARIA, THE SCREW- 

 WORM fly; SARCOPHAGA SARRACENIAE, THE COMMON LARGE 

 GRAY FLESH FLY; AND SARCOPHAGA ASSIDUA, A SMALL GRAY 

 FLESH FLY 



Habits of Adults 



On emergence from the pupal cases, after the wings are suffi- 

 ciently dry, the first impulse is to seek food. It seems to be the 

 object of each individual to seek its own nourishment, since each fly 

 takes flight alone. These insects are never seen flying about in 

 aggregation in quest of food. Sarcophaga sarraceniae is rarely 

 found in large numbers about a carcass, while Lucilia caesar and 

 Compsomyia may be very numerous. 



'Diptera kindly identified by Prof. J. S. Hinc, of Ohio State University, 

 ^Accidental. 



