PARASITOLOGY. 145 
Symptoms.—lf only a few worms are found no se- 
rious results are noted; if infested in 
ZY Va great numbers they produce gradual 
anemia asa result of the loss of blood; 
* irregularities in digestion, diarrhoea, 
Fig. 54— 
Orsornacostoma unthriftiness, emaciation and _ finally 
ee death. In somecases of infested hogs 
b, Female. when the colon is opened the con- 
tents are fairly alive with the wriggling 
myriads of the Oesophagostoma Dentatum; a posi- 
tive diagnosis is finding the ova and worms in the 
feces. 
Treatment.—Fast the hog for twenty-four hours; 
then give areca nut and santonin the same as for the 
Ascaris Suilla. 
UncrnaRIaA RapiaTa. (Uncinatus—hooked) 
(Radiatus—radiate). 
Synonym.—Hook worm. 
Distribution. —F ound in various parts of the Uvited 
States. Common in certain parts of Texas. 
Description.—The worm is the size ¢ 
of a large thread in calibre and white 
in color; the caudal pouch of the male Fait 
causes that extremity to appear blunt; 
the tail of the female terminates in a d 
rather sharp point; the mouth parts 
are provided with hooklets with which a ee 
it holds on to the mucous membrane; Rapiata 
the male is about three-fourths of an * Male. 
b, Female. 
inch long, the female about one inch. pdr Caudal extrem: 
. ity. 
Animal Intested.—The ox. D beptie ee 
Parts Intested.—Small intestines. tremity. 
Conditions Produced.—Causes uncinariosis in cat- 
