ADDITIONAL OBSERVATIONS ON THE PARASITES 
OF MAN AND Oe Be 
BY A. E. “VERRILL. 
In the following pages some species of parasites are added 
to those enumerated in the last report, as found in the domes- 
tic animals. Many additional facts have also been ascertained 
concerning the habits and history of several of the species 
previously described, and some of the more important of these 
discoveries will be noticed here. 
INTERNAL PARASITES OF MAN. 
The name of the following species in the list, (Report for 
1870, p. 170,) should be changed to the earlier one given by 
Diesing. Bilharzia hematobia Cobbold, 1864, should be 
Gyncecophorus hematobius Diesing, 1858.* 
INTERNAL PARASITES OF CATTLE. 
Ascaris lumbricoides Linn. Small intestine. This species, 
which was accidentally omitted from the list (page 176) of the 
last report, but mentioned on page 235, should be added. It 
is regarded as perfectly identical with the common “ round- 
worm” of man. 
INTERNAL PARASITES OF THE HORSE. 
The following species should be added to the list, (p. 177.) 
Onchocerca reticulata Diesing. A small nematode worm, 
resembling Zrichina, found in the muscles and tunics of the 
arteries. 
Pentastoma Settenit Diesing. edi in the eye. 
INTERNAL PARASITES OF THE Hoe. 
The names of the two following species should be changed. 
Strongylus dentatus should be Sclerostomum dentatum Rud. 
Sclerostomum pinguicola should be Stephanurus dentatus 
Diesing. 
* Revision der Myzhelminthen; Trematoden: Sitz. Akad. der Wissenschaf- 
ten, 1858, p. 356. 
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