INSECT FAUNA OF HUMAN EXCREMENT 



595 



and was taken in a privy at Charlestown, West Virginia, by- 

 Mr. Busck. 



Liinosina albipeiuiis Rond. 



The Hies of this genus resemble somewhat the species of Bor- 

 boriis, but are smaller, and are distinguished by the imperfect 

 venation. The European records show that the larvae of some 

 species are found in decaying cabbages and among confervae 

 and in fungi growing on willows. L. albipcnnis^ illustrated here- 

 with, has been captured abundantly upon human excrement in 

 the course of this investigation at Washington, at Travilah and 

 Cabin Johns Bridge, Maryland, at Snickers Gap, Rosslyn and 

 Leesburg, Virginia, and has been taken in privies at Alexan- 

 dria, Virginia, by Mr. Pratt, and at Charlestown, West Vir- 

 ginia, by Mr. Busck. Specimens were reared early in the 

 summer from faeces collected on the 12th of May, and other 

 specimens were reared from excrement taken from the sinks of 

 the militia camp at Leesburg, Virginia, in July. September 13 

 it was captured on excrement in 

 a privy at Alexandria, Virginia. 

 It seems to be a very abundant 

 species in such localities but has 

 not been taken in houses. 



Limosina crassimana Hal. 



This species, common in Eu- 

 rope, is recognized here by Mr. 

 Coquillett. It has been captured 

 on both fresh and old excrement 

 at Washington, District of Co- 

 lumbia, by Messrs. Pratt and 

 Busck, at Travilah, Maryland, 

 by Mr. Pratt, and in a privy at Charlestown, West Virginia, by 

 Mr. Busck. 



Lhnosina fontinalis Fall. 



This is another European species, recognized here by Mr. 

 Coquillett, which has been captured at Travilah, Maryland, and 



Fig. 35. Limosina crassimana^ 

 with eularged antenna at right — 

 enlarged (original). 



