DIFfEROUS INSECTS. 
GAD-FLY. 
GENERIC CHARACTER. 
Antennae short ; setaceous. 
Mouth none ; but in its place three small impressed points 
are found, without any visible proboscis or rostrum. 
SPECIFIC CHARACTER. 
CEstrus Bovis. CE. alis immaculatis, abdomine nigro j basi 
albo apiceque fulvo. Linn. Syst. Nat. 
Gmel. 1 . p. 28O9. 
Wings without spots j a black band crosses 
the abdomen, which is white at the base, 
and tawny at the tip. 
CEstrus alis immaculatis, thorace nigro ; scu- 
tello pallido, abdomine nigro ; basi albo 
apiceque fulvo. Syst. Nat. xii. 2. p. 970. 
no. 4. 
Ox Gad-fly. . Reaum. Ins. 4. pi. 38. f. 7, 8. Degeer Ins. 6. 
p. 297. no. 2. pi. 15. f. 22. Linn. Trans. 3. 
p. 29I. pi. 23. f. 1, 2, 3, 4, 5, 6. Shaw 
Gen. Zool. 6. p. 358. pi. 102. 
These flies are so much dreaded by our cattle, that 
the moment they see one of them in the air the 
