3 2 The Hiflory 0/ A N I M A.. L S» 
It is frequent in our orchards. Authors call it, Mufca vefpiformis. 
The other fpecies of the Afilus are, 1. The long, flender-bodied, great Afilus, 
called the Lupus, or Wolf-fly. 2. The great, fmooth, black, and red Indian Afilus! 
3. The black-legged, blue-winged, fmooth, yellow Afilus. 4. The blue-bodied Aft- 
lus, with black ftreaks. 5. The brown-legged, white-winged, black, hairy Afilus. 
6. The black and reddifh-bodied Afilus. 7. The black-winged, fmooth, black-bo¬ 
died Afilus. 8. The black Afilus, with roundifh, ferrugineous wings. 9 The black 
Afilus, with white ftreaks and fpots. 10, The willow Afilus, with white wings* 
with two tranfverfe, black ftreaks in them. 11. The fmooth, black-bodied Afilus! 
with grey wings. 12* The fmooth, oval, grey Afilus. Many of thefe wound in a 
very painful manner; others of them are quite harmlefs, 
• 4 f f 1 vr i 1; • f \ ‘i "* , i j „ , ; «-. 
HIPPOB OSC A. 
T HH head of the Hippobofca is furnifhed, by way of mouth, with a fnout of 
a cylindric figure, obtufe, and formed of two valves; the tongue is fetaceous. 
Hippobofca pedibus tetrada&ylis. 
Tide Hippobofca , with four claws to the feet. 
common 
isjorfe^flp. 
This is a moderately large fly ; it’s body is of an oblong form, rounded at the 
end ; it’s colour grey, and it’s fkin fmooth: it’s eyes are large, and it’s wings large 
and tranfparent; and each of it’s legs is terminated by four fhort and fharp claws. 
It is very frequent about the bodies of horfes and oxen ; it adheres extreamly 
firmly wherever it lays hold ; it feizes on them principally about the perinaeum and 
groin, and is very troublefome. Authors call it, Hippobofcus; Ricinus Volans, and 
Mufca equina tenax. 
‘ _ ^ r . r r* ■ * 
Hippobofca pedibus fex daclylis . 
'The Hippobofca , with fx claws to each foot . 
This is a fmall, fly, but of a very lingular form : the head is fmall, but from that 
to the tail it grows gradually broader: the thorax is of a conoid form, or refembles a 
fegment of a cone ; the body is broadeft at the extremity, and is emarginated or 
marked with an impreflion or dent in that part : the wings are long, but remarkably 
narrow: the legs are all terminated by fix lhort claws. 
It was firft obferved by De Geer, in the neft of a fwallow ; but I have found it on 
the necks of horfes, and other animals. Reaumur has figured it in his eleventh plate, 
Vol. iv. 
The other fpecies of the Hippobofca are, 1. The long-bodied, dufky-brown Hip¬ 
pobofca. 2. The black, oval-bodied Hippobofca. 3. The round-bodied, fhort- 
winged Hippobofca. 
T A B A N U S. 
T H E head of the Tabanus is furnifhed, by way of mouth, with a probofcis or 
fnout, and with connivent teeth. 
Taba?ius grifeus abdominis fegmentis fngulis triangulo albo 
notatis . SC 1)0 
The grey Tabanus , with every fegment of the abdo?ne?i 
marked with a white fpot . 
This is a very large fly ; the head is greyilh, the eyes large and black; the wings 
are large, broad, and tranfparent, but they have fome dufky, ferrugineous lines in 
them : the thorax and the body are both grey, but the back part of the body under 
the wings is a little yellowilh, and in the center of each of the rings, all the way 
down the back, there is a triangular white fpot, with it’s point upwards: the thighs 
are black, and the reft of the legs yellow. 
3 
It 
