Mr. Cl ark'j Obfervch'ions on the Genus Oejlrus. 325 



The commifTion of errors like thefe, in a genus whole fpecies 

 had been more numerous, might have defied the podibility of de- 

 tection, while the patient inveftigator might endeavour to under- 

 fland them with unavailing labour. 



Nor can I obferve without regret, hi this refpe&able work, fuch a 

 direct abufe of the intention of Synonyma^ which, far from arTifting 

 as auxiliaries to the description, which they ought always to do, 

 ferve only to perplex by their perfect difagreement. 



Valliineri has given in the Italian language a very extenfive 

 account of the GE. Bovls and Ovis i with many curious quotations* 

 from the Italian poets and the ancients. Ragionamento intorno 

 all' Eftro de Buoi. Operc, torn. i. p. 225. 



Reaumur has alio been very copious in his account of the GE. Bov/'s 

 and Ovhy and has given a defcription of the h^morrboidalis^ but 

 appears not to have been acquainted with the GE. E§u/\ Hijioire 

 des Infettes, torn. iv. p. 503. 



Oestrus. Antenna articulis tribus, ultimo fubglobofo feta 

 anticc inftrueto, in foveis duabus frontis de- 

 merfse. 

 Os apertura fimplex, neque ullo modo exfertum. 

 Palpi duo, biarticulati, apice orbiculares in de- 

 prefllone oris utrinque fiti*. 



I. Bwis. CE. alis immaculatis fufcis, abdomine fafcia atr& 

 media: apiceque pilis fulvo-flavi?. 

 Vallifneri Opere, torn, i, tav, 28. f. 10. Larva i, 2, 

 et feq. 



* Fades hujus generis mufcarum omnino peculiarls ell, lata, deprefia, veficulofa, 

 glauca, et antennis in capite alte immerfis. Frons etiam faciem quadrupedis nonnihil 

 firaulat, prasfertim Simice ; hoc in CE. h<?nicrrhoidaIi maxkne confpicuum eft. 



6 Reaumur* 



