Oct. 10, 1913 
Cysticercus Ovis 
31 
antiporai lobe being slightly larger than the other. Laterally the ovary extends to 
the testicular field, but anteriorly is separated from it by a space which is greatest in 
Fig. 7. —Sexually mature segments of Taenia ovis. Enlarged. (Original.) 
the median line. Posteriorly the testicular field extends beyond the posterior limits 
of the ovary but slightly, if at all, and falls short of a transverse line drawn through 
the posterior border of the yolk gland. 
Gravid uterus (figs. 9 and 10) with 20 
to 25 lateral branches from the median 
stem. Eggs (embryophores) oval, 30 by 
24 to 34 by 2&jj, in diameter. 
Hosts. —Larval stage: Sheep (Ovis 
dries); goat {Capra kircus). 1 Adult stage: 
Dog (Cants familiar is). 
Location. — Larval stage: Muscles 
(heart, voluntary muscles, esophagus), 
more rarely lungs, wall of stomach (?), 
and kidneys (?). Adult stage: Lumen 
of small intestine. 
Localities. —England, France, Germany, Algeria, German Southwest Africa, New 
Zealand, and United States. 
Type Specimens. —Probably not in existence. 
imm. 
Fig. 8 . —Sexually mature segments of Taenia hydati * 
gena. Enlarged. (Original.) 
REMARKS ON MORPHOLOGY AND COMPARISON WITH OTHER SPECIES 
The larval stage of the sheep-measle tapeworm somewhat resembles 
Cysticercus cellulosae in its general morphology. The spirally disposed 
neck and head and the mammillate surface of the caudal bladder suggest 
the pork cysticercus. The smaller average size and more delicate struc¬ 
ture of the cysticercus and the shape and number of the hooks, however, 
differentiate it quite clearly from C. cellulosae. The hooks are somewhat 
slighter in build, have smaller blades, and are different in outline; the 
number commonly exceeds the usual number found in C. cellulosae , 
though the limits of variation in number are such in the two forms (24 
to 32 in C. cellulosae , according to various authors, and 24 to 36 in C. 
1 This record is based on a specimen in the collection of the Bureau of Animal Industry collected in April, 
1912, from the heart of a goat about 2 years old, origin unknown, slaughtered at one of the abattoirs in 
Kansas City, Mo. 
7954 0 —13- 3 
