282 THE HOUSE FLY—DISEASE CARRIER 
port for 1890, listed eight parasites, only two of which 
were specifically determined. 
The writer’s recent investigations of the insect fauna 
of human excrement (Proc. Wash. Acad, of Sciences, 
Vol. II, pp. 541-604. Dec. 28, 1900) aroused his in¬ 
terest in the general subject of coprophagous insects, 
and the flies reared in 1889-90, from cow dung, were 
looked up and have been named by Mr. D. W. Coquil- 
lett. The list is so interesting that it should be re¬ 
corded. It will be noticed that several of the species 
are identical with those found breeding in human ex¬ 
crement. These are: Sarcophaga incerta, Helicobia 
quadrisetosa, Musca domestica, Morellia niiccins, My- 
ospila meditabunda, Ophyra leucostoma, Sepsis viola- 
cea, Sphcerocera subsultans and Limosina albipennis. 
The rearing of Ceratopogon specularis from cow dung 
is of especial interest, since, down to the record in the 
Washington Academy paper just referred to, no in¬ 
sects of this genus had been found to be coprophagous. 
Some of the other records are interesting for the same 
reason. The list follows: 
Family Cecidomyid^e 
Diplosis, sp. Issued Dec. 26, 1889; and Jan. 18, 1890; 
4 specimens. 
Family Mycetophilim: 
Sciara, sp. Issued March 26 and 29, 1890; 2 specimens. 
Family Chironomid^ 
Camptocladius byssinus, Schrank. Issued Jan. 2, 1890. 
Issued Dec. 31, 1889; and March 25, 1890; 9 speci¬ 
mens. 
