420 ENTOZOA. 



Mr. Joseph Gamgee has likewise written on the same subject. More 

 precise references to these and other similar memoirs will be found 

 in the Bibliography appended to this work. 



Lastly, in connection with the subject of "bots," I have to 

 express my indebtedness to Dr. Kirk, F.L.S., for several interest- 

 ing specimens, accompanied with appropriate notices. Seven large 

 (Estrus-larv£e are from the frontal sinus of a species of Hartebeest 

 (probably Acronotus lunatus), killed twenty miles south of Lake 

 ISTyassa ; five smaller "bots" having been procured from the 

 stomach of a cow elephant shot among the hills lying north of the 

 Victoria Falls, in Central Africa. More interest, however, attaches 

 itself to a solitary larva of a species of Musca which had taken up 

 its residence in Dr. Livingstone's leg. Dr. Kirk removed this 

 parasite by incision; and, on a second occasion, he obtained a 

 similar specimen from the shoulder of a negro. The natives af&rm 

 that the adult insect is not unlike, but rather smaller than our 

 ordinary blue-bottle (Miisca vomitoria). Dr. Kirk states that the 

 species is not common. Burton mentions, it is added, that he had 

 heard of it as occurring in an inland district in the neighbour- 

 hood of Zanzibar. 



