INSECTS. DIPTERA 97. CEftrus. 
S83 
Lina. Traittfall. iii. p. 313. tab. 14 — 17* 
Keaiim. IxJ. tab. 35. Af* Larva 8, 9. 
Dcpofits It’s eggs on the inner margin of the nollrils of Sheep, 
occafioning them tq (hake their heads violently and hide their 
nofes in duft or gravel. The larva: crawl up into the frontal 
linufes or horns, and when full fed, are again difcharged 
through the noftrils. 
Lefs than Oeft. Equi. Head with hollow dots on the crown : 
thorax cinereous with black raifed dots and 4 black lines : 
above the aperture of the mouth is a fmall conic procefs. 
Larva white ovate, pointed before with z hooks, truncate 
behind with a prominent margin and z black refpiratory fcales. 
Above convex, with black lines and dots.; beneath flat, -with 
minute rough black dots in the middle of the fegments. 
Black ; wings brown : thorax black as far as the middle, 
behind and bafe of the abdomen with yellowilh hairs. 
Inhabits Georgia. Lina. Tranf, iii, p. 299. 
Depofits it’s eggs in the fkins ot Hares and Rabbits. 
Twice as large as CEll. fiovis. Sides of the abdominal fegments 
yellow : body beneath black. Larva brown ; every where 
rough with very minute prickles. 
Grey ; face white dotted with black. 
Inhabits ; laige. 
Abdomen grey dotted with black : nvings brownilh ; fcales of the 
poijers long rounded brown. 
Wings immaculate: thorax yellow with a black band; 
abdomen fulvous tipt with black. 
Linn. AH. Holm. 1739. 1 ,. fig. 5. 6. 
Inhabits Lapland. Depofits it’s eggs on the back of the Rein- 
deer and is often fatal to them. 
Wings white: body black with cinereous hairs: thorax 
with a deep black band. 
Inhabits Lapland, on the Rein-deer. 
Wings with a brown band and dots : body hairy tawny.- 
grey : abdomen with 3 rows of blackilh fpots. 
Inhabits Pall. It. i.^. ziz. and 473. 
Depofits it’s eggs on the back, of the Antelope, 
Downy, yellow : tail with 3 tufts of blackilh hairs. 
Inhabits Lepech.lt. 1,/. 75. 
Body entirely brown. 
South America. Lintie ap, Pall. nordBejtr.p. 157. 
Depofits 
