62 VETERINARY PARASITOLOGY 
demonstrated by their occasional appearance in the 
feces, treatment is sometimes resorted to. As they are 
unarmed, there is little difficulty in expelling them. 
The following draught is usually efficacious : 
ROL. tereb. ei £2 on oe 3ij. 
Creosoti es sy ea ve JO]e ; 
Ol. lini .. ei ad O.j. 
M. Fiat haust. 
Male-fern, areca-nut, kamala, and kousso, are other 
remedies frequently employed by veterinarians. 
Fic. 14. HEAD oF T&NIA Fic, 15.—HEAD oF TNIA 
PLicaTa. MAMILLANA. 
Ascaris Megalocephala.—This is a large round-worm, 
of a whitish or yellowish colour, often present in the 
intestines of the horse. The female ranges from 6 to 
13 inches in length, and the males from 5 to 12 inches. 
The body is stiff and cylindrical, while the head is large, 
easily visible, and set upon a well-marked constriction, 
or neck. It carries three lips. The male possesses two 
wing-like outgrowths—one on each side of the tail. 
The life-history has been the subject of much investiga- 
tion. 
According to Albrecht, ova which are kept in moisture 
