22 THE INTERNAL PARASITES OE 



administration of an ounce of powdered male fern, in com- 

 bination with an equal quantity of pulverised areca nut. 

 This should be followed by a brisk cathartic, and repeated 

 at intervals of four hours if necessary. Treatment 

 by assafcetida, turpentine, and linseed — such favourite 

 remedies with veterinarians — is a coarser, but by no 

 means ineffectual method. 



As I shall have occasion to revert to this subject when 

 discussing the parasites of sheep, I will only here further 

 observe that we are still entirely in the dark as to the 

 source and specific characters of the tapeworm larvge of 

 this particular species of cestode. The suggestions made 

 by Mr. Cox on this head are altogether at variance with 

 the more healthy deductions to be gathered from recent 

 scientific experiences. The nature and value of these 

 indications will appear in the sequel ; but, before I pass 

 to their consideration, it remains for me to offer a few 

 words on another bovine cestoid parasite, which may be 

 called the Toothed Tapeworm. 



This entozoon (Tcenia denticulata) is a small species 

 of its kind, measuring only from eight to sixteen inches in 

 length ; realising, however, a breadth of from one half 

 to nearly an entire inch. The head is square-shaped, 

 and, as in its congener above described, is possessed 

 of neither hooks nor proboscis. The suckers are large 

 and globular; a more distinctive characteristic being 

 noticeable in the form of the joints or segments, which 

 are twenty times broader than they are long. As in the 

 other bovine tapeworm, the reproductive papillse are 

 double ; one being placed on either side of each division 

 or proglottis — as the joint is more correctly called. 

 Nothing is known respecting the development of this 

 species • and, so far as I am av/are, it has never been 



