108 PARASITOLOGY. 
The condition produced by the genus Strongylus 
is called Strongylosis. 
The condition produced by the genus Sclerostoma 
is called Sclerostomiasis. 
The condition produced by the Stephanurus is 
called Stephaniasis. 
The condition produced by the genus Syngamus 
is called Syngamosis. 
The condition produced by the genus Oesophag- 
ostoma is called Oesophagostomiasis. 
The condition produced by the Uncinaria is called 
Uncinariosis. 
The heads of some are provided with papillae ; 
others are nude, while some have a buccal armature 
consisting of membranous teeth. 
Some infest the stomach and the small or large in- 
testines ; others are found in the fat around the kid- 
ney and in the lungs, etc. The male is provided 
with a caudal pouch which may be a single pouch or 
divided into two (bilobate). The caudal pouch is 
composed of finger-like projections or ribs; stretch- 
ing from rib to rib is a delicate membranous expan- 
sion which forms the pouch, the ribs acting as sup- 
ports. Two spiculae, usually of equal length, are 
observed. In some species they project beyond the 
pouch, others scarcely to its posterior border. The 
caudal pouch is used to clasp the female during th 
act of copulation. 
STRONGYLOSIS. 
Strongylosis is a condition in which the animal is 
infested by some of the strongle. There are five 
forms of strongylosis, viz.: 
