. A practical treatise on diseases of the skin, for the use of students and practitioners . Dipterous Larvae in and beneath the Human Skin. There is no dipterous insect peculiar to man alone, but a num-ber of cases are on record where the ova of several species ofoestrus have been deposited in the skin, and larva1 been subse-quently formed. The oestrus bovis, or gad fly, is the most com-mon of these. Usually after the ova are deposited by the insect,a painful swelling occurs which may change its place from onepoint to another. When suppuration is induced, the larvae canhe removed by pressure u
. A practical treatise on diseases of the skin, for the use of students and practitioners . Dipterous Larvae in and beneath the Human Skin. There is no dipterous insect peculiar to man alone, but a num-ber of cases are on record where the ova of several species ofoestrus have been deposited in the skin, and larva1 been subse-quently formed. The oestrus bovis, or gad fly, is the most com-mon of these. Usually after the ova are deposited by the insect,a painful swelling occurs which may change its place from onepoint to another. When suppuration is induced, the larvae canhe removed by pressure upon the boil. Walter Smith,1 of Dub-lin, has lately described such a case, where the swelling upon theankle of a twelve-years-old girl moved to the elbow, and theredischarged a white grub nearly an inch in length. Birdsall2has described a specimen sent him from Gaboon, on the West Fig. 61. mmm c d (Estrus. a, the larva, natural size ; h,some of the segments seen under a lens,and showing the lines of minute projec-tion ; c, and d, the terminal enda of theinsect. (After Abraham.; Fig. tus. (After Coast of Africa, in which two worms escaped from between themiddle and the ring fingers of (me hand; another workmanhaving had a similar accident occur upon the leg. The flywhose ova had been deposited in these two cases, was said toattack the*gorilla; and the Pawnees, a tribe of Indians engagedin capturing these animals, were reported as being very com-monly troubled in the same way. The worms sent to Dr. Bird-sail were respectively one-fourth and one-half of an inch inlength, and about one-eighth of an inch in thickness. 1 Sec Report of [nternat. Med. Congress, Arch, of Derm., Jan. 1882. 2 N. Y. Med. Record, .Mar. 18, 1883, p. 298. PEDICULOSIS. 549 Abraham, of Dublin, has also examined and reported upon asimilar case, the specimen having been sent to the editor of theLondon Medical Press and Circular, from Portsalon, Letter-ken Ixodes (Wood-Tick). Several sp
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