hakertra mprsiorocy. 135 
ScLERostoma HypostomuM (hypo—under, stoma—mouth) 
Synonyin.—Chabertia ovina. 
Distribution.—Found in the United States and 
Europe. Not very common. 
Description. — The body is thread-like, white in 
color and rigid; the head is slightly globular; the 
mouth parts are provided with a double row of mem- 
branous teeth; the head is surrounded by six papillae; 
the caudal pouch is short and gives the male a cut 
off appearance; the tail of the female terminates in 
a blunt point. The male is three fifths of an inch in 
length, the female about one inch. 
Lite History. Mode otf Intestation.— The female is 
oviparous, the ova pass out to the ground with the 
feces; the eMbryos after emerging from the ova go 
through certain changes and are then taken in by 
the host through the food and water. Upon reach- 
ing the intestinal tract they develop into the mature 
form. 
Animals Intested.—The sheep and goat. 
Parts Infested.—Small and large intestines. 
Condition Produced.—By means of the buccal arm- 
ature they hold on to the mucous membrane and suck 
the blood; punctiform hemorrhages have been noted 
in the intestinal mucosa; when in large numbers 
they cause disturbance in digestion, a general un- 
thrifty appearance, diarrhoea, emaciation, anemia 
and possibly death. These wounds often furnish 
channels through which infection may take place. 
Treatment.—Physic and gasoline are prescribed as 
in infestation with the Strongylus Contortus- 
(Dentos—toothed) 
STEPHANURUS Dentatus (Stephanos—a crown) 
<Oura—a tail). 
