DIPTERA. 289 



2. Echinomyia ferox, Panz. Rare. Taken by my 



father, brother, and myself, in Whitedown 

 chalk-pit, August, 1870. 



3. E. grossa, Linn. A single specimen only was taken 



by my brother in a window of the Manor House, 

 July 31st, 1870. It has been bred from the 

 larva of Bombyx rubi. 



(Estridce. 



]. Gasterophilus equi, Fab. Horse Fly. Not common. 



1. Cephalemyia ovis, Linn. Sheep Fly. Bare in the 

 perfect state. Taken by my father, August 

 16th, 1820, and June 22nd, 1829; also by 

 myself in Sandhills, July 7th, 1870. 



1. (Estrus bovis, Linn. Bot Fly. Not often seen in 

 the perfect state. 



OMALOPTERA. 

 Hippoboscidce. 



1. Hippobosca equina, Linn. Forest Fly. Bare. A few 

 specimens only have been taken by my father. 



1. Ornithomyia avicularia, Linn. Common in the 



spring on blackbirds and thrushes. 



2. O. viridula, Meig. Common in the spring on 



rooks. 



3. O. fringillina, Curt. This small species is of rare 



occurrence on chaffinches in the spring. 

 1. Stenopteryx hirundinis, Linn. Common in certain 



u 



