PARASITOLOGY. 177 
is a slight attenuation toward the posterior extremity. 
The entire worm measures from two to seven inches 
long. 
Animal Intested.—The horse. 
Parts Infested.—The caecum. 
TAENIA MAMILLANA (Mammalis—mammal). 
Description.—The head is rounded, with the sucker 
discs located at the side, in the form of slits; the 
neck is absent, and the posterior border of the seg- 
ments is wider than the anterior; the worm is much 
smaller than the preceding one, measuring one to 
one and one-half inches long. 
Animal Infested.—The horse. 
Parts Infested.—Small intestines. 
TAENIA PiicaTa (Plicatus—to fold). 
Description.—The head is thick and wide; it is 
depressed on either side; the suckers are located at 
the free end of the head, and are round; the neck is 
absent; the segments are about one-half inch wide; 
the worm measures from two to three inches in 
length. 
Animal Intested.—The horse. 
‘Parts Intested.—The intestines and colon. 
TAPEWORMS OF CATTLE AND SHEEP. 
The tapeworms of cattle and sheep are unarmed 
Taenia. The segments are wider than long. The 
life history outside of the body is unknown. 
Taeniasis among cattle and sheep is more com- 
mon in summer than in winter. During the grass 
season range cattle are especially prone toward this 
infestation. 
