CYCLORRHAPHA 



Pkoboscidea 



Oestridae 



. 128. (Oestridae) Nv/>oi/t-riiiiJ lincahim \'illiers. 

 $ 13 mm. One of the two "Ox Wafble flies," 

 causing sores known as "warljles" by the 

 presence of its larvae on backs and flanks of 

 cattle. The eggs are laid on legs and larvae 

 enter via skin and crawl to the back (Theobald). 

 Man is also occasionally attacked. (New 

 Forest.) 



Fig. 129. (Oestridae) Hypodcrina hoi'is De Geer. .Stonter 

 and larger than the preceding : destructive to cattle 

 hides and meat. Carpenter says it is commoner in 

 Ireland than in England. Life history similar to 

 H. liihiituin. (New Forest.) 



Fig. 130. (Oestridae) Oestrus oi'is Linn. 11 mm. The 

 "Sheep nostril fly," deposits eggs or larvae in 

 nostrils of sheep. The maggots live in the nose, 

 and penetrate the bony cavities of the skull. 

 (.Specnnen from Caniliiidge Museum.) 



