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 

 head part is provided with six 

 papillae; the tail of the male is 

 provided with a caudal pouch; 

 the male is one to one and one- 

 fourth inches long, the female 

 one and one-fourth to one and one-half inches. 

 Animal Infested. — The hog. 



Parts hifested. — It infests the fat in the sublumbar 

 region. 



Condition Produced. — Small abscesses varying in 

 size to a pigeon's ^ZZ 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 



Fig. 47- 



Stephanurus Dentatus 



a, Male. 



b, Female. 



c, Caudal extremity. 



d, Cephalic extremity. 



