BOTHRIOOBPHALUS CORDATUS. 



299 



obtained at Grodhaven, North Greenland, and were transmitted to 

 Steenstrup by tlie Danish inspector, Counsellor Olrik.* Only one of 

 the worms (about a foot long, or twenty- six centimetres) came from 

 the human body, all the others being from dogs, in which animal it 

 exists in considerable numbers. It differs from Bothriocephalus latus 



Fig. QQ. — Example of BotJmocephalus cordatus from the human body. (Natural 8ize.)-Leuckart. 



chiefly in the form of the head, which is heart-shaped (or, rather, 

 obcordate), short and broad, and set on to the body without the 



* The peculiar Danish title Justizrath, which I have here rendered " Counsellor," 

 does not imply any legal honour. It is merely equivalent to " Authorized Medical 

 Inspector." 



