35 
of the prairie dog are not well known, doubtless because 
their bodies generally remain underground when they 
die of disease. This makes the second original obser- 
vation on them from these gardens, Trichisoma hepaticum 
having been reported last year; and during our control 
examinations of the feces of prairie dogs bought more 
than a year ago for trichosoma research, we have found 
a third. This is a strongylus larva, — certainly nonpatho- 
genic, since all six of the animals infested are gaining in 
size and are perfectly healthy. 
The second paper is technical, entitled ^^A Method of 
Obtaining Duplicate Reconstructions from the One Series 
of Wax Plates' —New York Medical Journal, 1917, Vol. 
CV, No. 9, page 400. The subject matter was furnished 
by a fluke, Cladorchis (Stichorchis) subtriquestus, from 
the cecum of a beaver dying in these gardens. 
Animal Parasites in Large Carnivora. 
In March 1916 the feces of all the Carnivora in the 
exhibition house were examined for intestinal parasites. 
We had known for several years that a female jaguar had 
tapeworm of the genus Dibothriocephalus because it had 
passed links for several years past, and in addition at 
least two lions had voided or vomited round worms at 
one time or another. We suspected, from these, that 
perhaps the poor condition of some of the animals might 
be due to intestinal parasites, but were agreeably sur- 
prised to find a large majority of the animals with a 
perfectly clean bill of health in this respect. The results 
are detailed below. 
Spotted Wild Cat — Fairly numerous ascaris ova. 
Female jaguar — Enormous numbers of segmented dibo- 
thriocephalus ova. 
Male jaguar — Ova similar to those in female but not so 
numerous. 
Snow leopard — Fairly numerous ascaris ova, seg- 
mented and containing early larvse. 
New lioness — Very few ascaris ova. 
