270 



The Farmer'' s Veterinary Adviser. 



Simne suffer severely from a thorn-lieaded worm (Echin- 

 orynclms Gigas) from three to eighteen inches long; a 

 hair-headed worm (Tricocephalus Orenatus) a little 

 smaller than the ruminant's ; an ascaris (A. Suilla) like 

 (hat of ruminants ; the Sclerostomum Dentatum, three to 

 five lines in length, and the Trichina Spiralis, one-eight 

 eenth to one-sixth inch long. 



Yig. 32. Fig. 34 



Fig. 33. 



Fig. 35 



Fig. 36. 



fig, 32 — Head of Dog's Tape-worm (T. Cucumerina). Larval form in Ihc 

 dog-louse (Trichodectes Cani). Fig. 33 — Head of Dog's Tape-worm (T. 

 Marginata). Fig. 34 — Cyst of same (Cysticercus TenuicoUis) infests rumi- 

 nants, omnivora, etc. Fig. 35 — Ascaris Marginata, nat. size. Fig. 36-- 

 Ascaris Mystax, nat. size. 



In addition to the tape-worms mentioned in the general 

 articles on parasites, the dog suffers much from others, as 

 from the following round worms : Ascaris Marginata, twc 

 to four inches long; Spiroptera Sanguinolenta, one and 

 one-half to three inches long ; Strongylus Trigonocepha" 



