PARASITOLOGY. 169 
and gradually thickening toward the posterior part; 
slightly curved on the ventral surface. It fixes itself 
to the mucous membrane by means of a sucker on 
the posterior or large end. It is of a pinkish color 
and about one-half inch in length. 
Animals Intested.—The ox, sheep, goat, and camel. 
Parts Intested.—The Rumen. 
Condition Produced.—They attach themselves to 
the mucous membrane between the papillae of the 
rumen; most common near the oesophageal groove. 
They are not reported as causing serious results. 
SCHISTOSOMIDAE. 
The family Schistosomidae includes the blood 
flukes. 
(Soma—body) 
ScHISTOSOMUM Bovis (Bovis—ox) 
(Schistos—cleft) . 
Synonym.—Blood fluke. 
Description.—Small in size, round in shape and 
provided with two suckers located on the anterior 
end. The female is larger thanthe male. The eggs 
are elongated and armed with sharp points. 
Animals Infested.—The ox and sheep. 
Parts Intested.—Blood vessels. : 
Condition Produced.—The animals presumably be- 
come infested through drinking water. The flukes 
are found principally inhabiting the veins of the ab- 
domen, more especially the venous plexuses of the 
bladder and rectum. They may cause nephritis, 
cystitis, and as a result bloody urine or feces. The 
adjacent lymph glands become hypertrophied. The 
condition may terminate in death. ; 
