DISEASES OF GOATS, DOGS, AND CATS 657 



and every utensil or other thing infected or suspected of being in- 

 fected with rabies, shall be thoroughly cleansed and disinfected by 

 and at the expense of the owner or occupier in a manner satisfactory 

 to a Veterinary Inspector. 



7. On receiving the report of an Inspector to the effect that 

 rabies is known or suspected to exist in any locality, the Minister of 

 Agriculture may order that all dogs, or other animals, within such 

 an area as he may determine or describe, shall be detained, isolated 

 or muzzled in such manner and during such period as he may see fit. 



J. G. RUTHERFORD, 



Veterinary Director General. 

 HEALTH OP ANIMALS BRANCH, 



DEPARTMENT OF AGRICULTURE, 

 OTTAWA. 



PARASITES OF DOGS AND CATS. 



THE SUCKING DOG-LOUSE (HCEMATOPINUS PILIFERUS). 



Although the dog has been the closest companion of man among 

 the domestic animals from very early times, and consequently this 

 parasite in all probability well known to keepers of dogs, it was not 

 technically described until about the year 1838. 



It does not appear to have been a very numerous or injurious 

 parasite, apparently much less so than the Trichodectes latus infest- 

 ing the same animal, and less annoying than either ticks or fleas. 

 Denny says (Monog. Anop. Brit., p. 29), "I have found it upon dogs 

 two or three times, but it is by no means of common occurrence." 

 Denny says (loc. cit.), "I also received specimens from the ferret." 

 It can hardly be inferred, however, that this animal is a normal host 

 of the species, as such an instance might occur entirely from acci- 

 dent, the louse having been transferred from some dog to a ferret 

 associated with it. 



This species is somewhat smaller than the lice infesting most of 

 the larger mammals, the full-grown individuals being nearly one- 

 tenth of an inch long. It is described generally as of a light-red or 

 ashy flesh color, but evidently varies as the other species, according 

 to condition of the body as well as age of specimens. In preserved 

 specimens these colors become lighter, assuming a yellowish hue, 

 the abdomen, except where darkened by the intestine and its con- 

 tents, appearing a shade lighter than the front part of the body. The 

 abdomen is thickly covered with fine hairs and minute warty emin- 

 ences, these latter when magnified about 300 diameters appearing 

 like the scales of a lizard or fish. Specimens from different breeds of 

 dogs do not appear to have been noticed as different, though a form 

 described as H. bicolor by Lucas may perhaps be found to present 

 race characteristics. 



THE BITING LOUSE OF THE DOG (TRICHODECTES LATUS). 



Something over a century ago DeGeer mentioned a species of 

 parasite on the dog under the name of Ricinus canis, which probably 

 referred to this species, and another mentioned by Olfers under the 



