588 



HOWARD 



i8), by Mr. Pratt, at Falls Church, Virginia, by Mr. Banks, and 

 in the sinks at the District of Columbia militia camp at Lees- 



FiG. 33. Nemopoda niinuta — enlarged (original). 



burg, Virginia (July 19), by Mr. Pratt. It has been bred from 

 human faeces at Washington by both Messrs Pratt and Busck. 



Piophila casei Linn. 

 The little shining black flies of the genus Piophila breed in 

 cheese, ham fat and in other fatty or spoiled and decaying ani- 

 mal matter. The present species is the parent of the common 

 cheese maggot or skipper and is one of the species occasionally 

 referred to in cases of myiasis interna since the larvae have been 

 known to pass alive through the alimentary'- canal of human 

 beings. The same insect sometimes does considerable damage 

 to hams in western packing and curing establishments. It 

 breeds commonly in human corpses, probably only or mainly 

 on adipose tissue and Dr. Motter found its puparia abundantly 

 in 12 of the graves which he examined in 1896-97. Each fe- 



