[ 25 ] 



PLATE DL. 



OESTRUS OVIS. 



SHEEP BOT-FLY, GAD-ELY, er BREEZE-FLY. 

 DIPTERA. 



GENERIC CHARACTER. 



Mouth with a fimple aperture, and not exferted: feelers two, each 

 confifting of two articulations, with the tip orbicular, and feated 

 on each fide in a depreffion of the mouth : antennae of three joints, 

 the laft fubglobular, and furnifhed at the anterior part with a brittle^ 

 placed in two hollows of the front. 



SPECIFIC CHARACTER 



ANC 



SYNONYMS, 



Oestrus Ovis. Wings tranfparent, with fpots at the bafe an4 

 dotted nerves : abdomen filky white, varied with 

 black dots and fpots. 

 Reaum. Inf. t. 36. fig. 22. — Larva. 8, 9. 



QfiSTRls Ovis. Wings tranfparent, with fmall fpots at the bafe: 

 abdomen chequered with black and white. Clarke, 

 Linn. Tranf. F. 3. p. 313. tab. 23. Jig. 14 — 17- 



This is one of thofe deftru6live creatures which infeft quadrupeds> 

 and are known under the general appellation of the Bot-flies. Th® 

 particular fpecies now before us is that peculiar to the Sheep tribe. 



vol. xvi. E Everj 



