20 6 ORDER VI. Oeftrus. 



found, without any vifible probofcis or 

 roftrum. 



Geoffroy obferves, that the antennas of the 

 Oeftrus are fetaceous, and grow, or are placed, 

 upon a fmall point or button. 



They have three (lemmata. 



Frifch, in his defcription of the Oeftrus Bo- 

 vis, Linn. No. i, afferts, that that infect has a 

 roftrum, which it can draw within its head, 

 and fhoot out at pleafure. 



Schaeffer obferves, that the abdomen in this 

 Genus is of equal fize with the thorax. 



The larvae of the Oeftri lay hid in the bo- 

 dies of cattle, where they are nourifhed the 

 whole winter ; the perfect infects are to be met 

 with in the fummer almoft wherever horfes, 

 cows, or fheep are grazing ; fome of them lay 

 their eggs under the (kin of cows or oxen, which 

 they pierce for that purpofe ; others, for the 

 fame end, enter the interlines of horfes by 

 the anus, and others, again, depofit them in the 

 noftrils of fheep - 9 in thefe different habitations 



the 



