OUR DOMESTICATED ANIMALS. 107 



paratively rare. This parasite is little known in Denmark, 

 and it appears to be altogether wanting in Iceland. In 

 France and G-ermany it is probably of much less common 

 occurrence than in this country. 



Of the remaining internal parasites infesting the dog, 

 I need only allude to several species and varieties of pit- 

 headed tapeworm (Bothrioc&phalus latus 3 B. cordatus, B. 

 fuscus, B. reticulatus, and B. dubius) ; since, so far as I 



Fig. 24. Larval Pentastome. 



am aware, only the first-named has been recognised as a 

 canine entozoon in England. 



I must not omit to mention thearichnidan parasite 

 (Pentastoma twmoides), which, as already stated, is the 

 adult representative of the Pentastoma denticulatum re- 

 siding in the viscera of the horse, as well as in the 

 internal organs of ruminants (Fig. 24) . The illustration 

 is from Kiichenmeister. In the fall-grown state this 



