590 DR. J. MURIE ON THE OCCURRENCE OF [Dec. 13, 



ochracea , remige secundo longissimo, tertio 2'", quarto 10'", 

 primo in ala dextra (speci?ninis unici haud adulti) 15'", in ala 

 sinistra 19'" breviore : primariis brunneis, in primis ad vel 

 ultra medium, in reliquis tola longitudine ferrugineo fasciatis, 

 secundariis ejusdem coloris margine postico lato pallide fer- 

 rugineo : gula pallide ferrugineo ; gastrceo reliquo ochraceo 

 plumis plus minusve brunneo transverse irregulariter fasciatis ; 

 caudce (incomplete?) rectricibus 1" latis, griseis, brunneo mar- 

 moratis, margine laterali ferrugineo tinctis, fasciis transversa- 

 libus brunneis irregularibus, in mediis 7, in lateralibus 9-13, 

 rectricibus externis 6'" brevioribus quam media. 

 Long. 8^", alse 5\", caudse 4", rostri a naribus 3'". 

 Hab. in Brasilia merid. Ypanema (Natt.). 



" This species is near to S. rufi cervix, but seems to differ in its 

 smaller size, in the presence of grey markings on the upper surface, 

 and in the want of a definite wing-spot and of the white tail-bands, 

 which are also less marked in the female of S. ruf cervix." 



■ 



13. On the Occurrence of (Estrus tarandi, Linn., in a Rein- 

 deer in the Society's Gardens. By James Murte, 

 M.D., F.G.S., Prosector to the Society. 



The disease commonly called "Bots" is one of frequent occur- 

 rence among horses in this country. But the disease or larva pro- 

 ducing it is by no means confined to the horse, being found in a 

 number of animals, particularly the Ruminantia, and even in Man 

 himself. 



A Dipterous insect, prejudicial to cattle, was known to the an- 

 cients ; Aristotle, in his ' History of Animals,' and Virgil, in his 

 ' Georgics,' have both alluded to it. In later times, when a true 

 system of classification was adopted, Linnaeus accorded a place in 

 his ' System ' to the genus (Estrus ; and that great naturalist himself 

 described more than a century ago the insect, the manner of oviposi- 

 tion, and the larva infesting the Reindeer in Lapland, in several papers 

 communicated to the Swedish Academy, the Upsala Society, &c. 



Among our own countrymen, Mr. Bracy Clark* has specially 

 written articles devoted to the consideration of the habits and specific 

 classification of this same genus (Estrus. But by far the most 

 complete account of the group is that of Friedrich Brauerf. The 

 observations of these authors, as well as a host of European and 

 American writers, concur in showing that the Ox, Sheep, Goat, 

 Deer, and others among the Ruminantia, the Horse, Ass, and Rhi- 

 noceros among Perissodactyla, the Rabbit, Hare, and Squirrel, Dor- 

 mouse, &c, among Rodentia, the Dog, Badger, Hyaena, and Jaguar 

 among Carnivora, the Didelphys among Marsupialia, and some of 



* Trans. Linn. Soe. vol. iii. p. 289, vol. xv. p. 402, vol. xix. p. 81. 

 t 'Monographie der CEstridcn,' Vienna, 1863, which work contains a full list 

 of the literature on the subject. 



