ote ENTOZOA. 
appears, been observed in certain Monkeys and even in Man, 
but theyare said to be never found in the Wild Boar(1). 
The Acrosroma, Le Sauvage, Ann. des Sc. Nat., is closely allied 
to this genus. The animal inhabits the amnios of the Cow. 
Canurus, Rud. 
Here we find several bodies and heads adhering to the same bladder. 
C. cerebralis; Tzenia cerebralis, Gm.; Geetz., XX, A, B; 
Encyc., XL, 1—8. This celebrated species is developed in the 
brain of Sheep, destroys a portion of its substance, and pro- 
duces a disease called the Staggers (ournis), because it compels 
them to turn on that side as if affected with vertigo. The same 
species has been observed in the Ox and other Ruminantia, 
where it produces similar effects. Its bladder is sometimes as 
large as an egg, and its parietes are thin, fibrous, and exhibit 
evident contractions. The little worms are hardly half a line in 
length and re-enter the bladder by contraction(2). 
Scouex, Mull. 
Where the body is round, pointed behind, extremely contractile, 
and terminated before by a sort of variable head, round which are 
two or four suckers, sometimes resembling ears or ligule. Those 
that are known are very small and inhabit fishes(3). I have seen a 
large one, 
S. gigas, Cuv.; Gymnorhynchus reptans, Rud., Syn., 129, 
which penetrates into the flesh of the Sparus raiit, L.- The 
middle of its body is inflated into a bladder, which, during the 
life of the animal, alternately widens and contracts in the middle. 
(1) For the remaining species, see Rud., Ent., II, p. ii, p. 215, and El., 179. 
(2) Here should probably come the genus Ecurnicocevus, Rud., I, p. ii, 247, 
* but Ihave not seen it, and have no idea of it sufficiently clear to enable me to 
class it. 
(3) See Rud., Hist. Il, p. 3, and Syn., 128. 
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