26 Br. PuLTENEY OH the /if car ides 



Among the more modern publications, that of M. Pallas unquef- 

 tionably holds a diftinguiihed rank. His 'rhefis de infijlis vlveniibu^ 

 intra viveniia., printed at Leyden in 1760, is an elaborate dilquifitioii 

 on this fubjeft, and is worthy of b:ing particularly noticed, as con- 

 taining not only very complete defcriptions and fpecific diiferences 

 of worms infefting the body of man, but alfo a coUecled feries of the 

 mod ufeful knowledge of preceding writers, with the various mode* 

 of extirpating thefe pernicious inmates. 



To the almoft unparalleled induflry of Otto Frederic Miiller the 

 greateft merit is due, for his accurate defcription of the Helminthic 

 order : and, probably, we owe to the Royal Society of Copenhagen^ 

 two publications which have fince fo much extended the knowledge 

 of the prefent day, onthefubjecl of my paper. The Premium, oi' 

 which I give the title below *, held forth by this Society, excited 

 the diligence of M. Bloch of Berlin, and M, Goeze, to both of whom 

 prizes were affigned. M. Bloch publiilied his Diflertation, which was 

 tranflated into French, under the title below recited t ; the latter 

 publilhed a Defcription of the fame animals, in quarto, p. 471. in the 

 German language, with 44 plates. Gmelin, in his enlarged edition 

 of the Syjierna Naturce, has enumerated feventy-eight fpecies of, 

 Jlfcarides, having arranged them according to the claffes of animals- 

 in which they exift ; of which, twenty-four fpecies of birds are 

 found to be infefted with thefe worms. Thofe I now fend arc an 

 addition to that number. M. Goeze alone, from references to his 

 work in Gmelin, appears to have delcribed upwards of twenty. 



* An, Semihium vermium Inteftinalium, Tenix, Goidii, Afcaridis, Fafciolx, &c. ani-. 

 malibus connatum ; an, ab extus intromiflum ; oblervationibus, et argumentis probare re- 

 mediaque in illo cafu recenfere. 



f Traite de la Generation des Vers des Inteftines et des Vermifuges. Strajburgh, 1788. 

 &I0. p. 127. tai, X. firft printed in German at. Berlin in i;^8j. 



./Ifcarides 



