144 PARASITOLOGY. 



tuberculous; in the infested sheep that are slaught- 

 ered the gut is rendered unfit for casings, by the 

 disease. 



Symptojns. — This form of oesophagostomiasis is not 

 so fatal as that caused by the oesophagostoma 

 inflatum; the fleece may appear dry ; it may be the 

 cause of partial loss of the wool crop. There may 

 be diarrhoea, general debility, anemia, sunken eyes, 

 emaciation and death. 



In cattle it does not prove serious in the United 

 States. Only a few nodules are found when these 

 animals are infested; these nodules are usually con- 

 fined to the small intestines. 



Ti^eaiment. — To destroy the adult worm in the 

 intestinal tract, the same treatment is advised as in 

 the Strongylus Contortus ; salt and sulphate of iron 

 constantly before them will also prove beneficial. 



Oesophagostoma Dentatum. (Dentis — tooth). 



Synojiyin. — Oesophagostoma Subulatum. 



Distribution. — Occasionally found in the United 

 States. 



Description. — The body is small in calibre and 

 white or grayish-brown in color; the worm slightly 

 tapering anteriorly; the mouth is circular and pro- 

 vided with six papillae ; the head is followed by a 

 constriction. The caudal pouch of the male is short; 

 the tail of the female terminates in a rather sharp 

 point ; the male is one-third to one-half inch long ; 

 the female is one-half to three-fourths inch. 



Animal Infested. — The hog. 



Parts Infested. — The caecum and colon; the writer 

 has found them in the kidney once; they have also 

 been reported once in the liver. 



