136 PARASITOLOGY. 
Synonym.—Sclerostoma pinguicola. Kidney worm. 
Lard worm. 
Distribution.—In the United States found espec- 
ially in southern hogs, especially in the States of 
Arkansas, North Carolina, South Carolina, and Ten- 
nessee. Rare in the Northern and Western States. 
Also found in Brazil and Australia. 
Description. —'The body is 
slightly larger than a knitting 
needle; the outer integument is 
transparent; the dark intestinal 
tract shows through the integu- 
ment, which gives the worm a 
mottled appearance. Both 
caudal and cephalic extremities 
present a blunt appearance; the 
Fig. 47— ‘ . . : 
STEPHANURUS Dentatus head part is provided with six 
a, Male. papillae; the tail of the male is 
b, Female. 7 a 
e, Caudal extremity: provided with a caudal pouch; 
d, Cephalic extremity. the male is one to one and one- 
fourth inches long, the female 
one and one-fourth to one and one-half inches. 
Animal Intested.—The hog. 
Parts Infested.—It infests the fat in the sublumbar 
region. 
Condition Produced. —Small abscesses varying in 
size to a pigeon’s egg are found in the fat in the 
sublumbar region; when these abscesses are cut 
open the center is found to contain a small amount 
of purulent material and usually a male and female 
sometimes three or four worms; the worms rarely 
invade the kidney; occasionally they may be found 
in the pelvis of that organ. They may invade the 
