INSECTS. DIPTERA. 97. GEftnis. 
581 
ORDER. VI. DIPTERA. 
Wi no's 2 , wider each of -which is a clavate 
poijer -with its appropriate Jcale. 
97 . OESTRUS. Mouth witii a fimpl aper- 
ture and not exferted: feelers 2, of 2 ar- 
ticulations, orbicular ut the tip and lea- 
ted each hde in adepreliion of the mouth: 
antennae of 3 ai ticulations, the laft fub- 
globular end furnillied with a briftle on 
the fore-part : placed in 2 hollows on the 
fVont. Gad-fy.Breeze. 
The face of this Angular genus is broad deprefled vcficular and 
glaucous, and has fome fort of refemblance to the Ape kind. 
They arc extremely troublcfome to Korfes Sheep and Cattle, 
depofiting their eggs in different parts of the body and pro- 
ducing painful tumours and fometimes death. The lar'v/e 
are without feet, ihort thick foft and annulate, and often fur- 
nilhed with Imall hooks. 
itriTitacuIatc brown - abdomen with a black band 
in tb? middle and orange-yellow hairs at the tip. 
LinneanTranfaCi. iii. /. 2^1. t,ih, I 6 . 
Reaum. hf. \.tah. 7 - Degeer. b. teh. i^-fg- az. 
Depofits its eggs in the back of Cattle, under the ikm ; which 
as they are changed into larvae produce a purulent tumour. 
Bv the pain it inflifts. an extreme terror and agitation isoc- 
cafioned, and the objcA of the attack runs bellowing wildly 
about, with its uileretland in a tremulour motion, and com- 
municates the agitation to the whole herd. 
white covered with down. yeilowifh before, the 
midole black with 4 ihort naked lines, behind cinereous : ah. 
damn cinereous at the bale : leaks of the pejirs large fnawy 
convex. : black with pale tarfi. 
Funale with a black liylc at the end of the abdomen. _ 
Larva brown, of 1 1 legnients, with traniverk rough snteirupted 
lines. 
Wings whitifii with a black band in the middle and 3 dots 
at the tip. 
