INSECTA 271 



Numerous cases of this sort have come under my observation, 

 but it often requires a profound knowledge of entomology to 

 determine the species. Several examples of cestridean larvae 

 occur amongst them. For one example of CEstrus hominis I am 

 indebted to Mr Higginson, of Liverpool, who obligingly supplied 

 me with notes of the case. Dr Kirk presented me with a 

 small bot which he removed from Livingstone's leg. I after- 

 wards deposited the African bot, in his name, in the Hunterian 

 collection. Bates speaks of an CEstrus in Brazil producing boils 

 in human flesh. Westwood quotes similar instances, Of these, 

 one was extracted from the thigh by Dr Brick. Mr Doubleday, 

 the entomologist, extracted one from his own leg, and M. Goudot, 

 another entomologist, was also victimised in the same way. 

 Both of these savans were travelling in America at the time. 

 Two cases from South America were also recorded by Howship. 

 In one the larva lodged in the back ; in the other in the 

 scrotum. Humboldt noticed that the Indians were much 

 infested by GEstridae. Three cases are severally recorded by 

 E/oulin, Guerin, and Audouin. Mr Stroop also mentions a case 

 in which an CEstrus was removed from an ulcer on the shoulder 

 of a boy in Texas. Another kind of bot known as the Macaco 

 worm (Guterebra noxialis) occasionally attacks man, but more 

 frequently cattle and dogs. For one example, taken from the 

 leg of a negro, at Belize, British Honduras, I am indebted to 

 Dr Dobson (A. M. D., Netley). Hope's list records five cases of 

 bots of CEstrus hominus, one of (E. Guildingii, one of (E. bovis, 

 and thirteen others (belonging to the same genus) as having 

 been noticed in man. Since his time many additional cases 

 have been recorded by J. M. Duncan and others. In like manner 

 a legion of cases in which the maggots of various Muscidae have 

 been noticed, either in, upon, or from the human body. At 

 a meeting of the American Academy in April, 1859, Dr Leidy 

 showed some larvae of the bluebottle fly vomited by a child ; 

 five larvae of the flower-fly (Anthomyia) from a physician's 

 own person (which had produced choleraic symptoms) ; and 

 nine examples of Guterebra noxialis. I have myself encountered 

 numerous insect larvae in medical practice. Amongst others 

 I have obtained the larvae of Anthomyia canicularis in six 

 or eight separate instances. One set of specimens, identified by 

 Wunderlich, was sent to me by Dr Brandt, of Oporto. Drs 

 Duffin, W. Fox, and Leared have supplied me with others. 

 The larvae described in Farre's case, not being setose, must be 



