Xll 



(d) Genus Cephalomyia, e.g., C. maculata. In the camel. 



(e) Genus Cephenomyia, e.g., C. rufibarbis. In red deer. 

 Scotland, 



(/) Genus Dermatobia, e.g., D. cyaniventris. Larva is the 

 ' ver macaque ' (America), producing myiasis in man and 

 cattle. 



(g) Genus Ochromyia, e.g., 0. anthropophaga. Larva is the 

 ' ver de Cayor ' (Senegal), producing myiasis in man. 



Myiasis is common in Africa and in the tropics, but the 

 larvae, have been identified in but few instances as yet. 



The fourth group, the Pupipara (to which Glossina also 

 belongs, from the point of view of its life history), comprises : 



I. — Hippoboscidae (spider flies). 



They run rapidly over the body, hiding in hair or feathers. 

 Head circular. No distinct neck. Clypeus distinct, separated 

 from the head by a curved suture. Antennae lie in cavities in 

 its anterior angle. Antennae : one segment with or without a 

 style (arista). Palpi absent. , Abdomen leathery, capable of 

 much distension in 9 • Tarsi : fifth segment longest, with 

 two or three claws. Empodia {between the claws) distinct. 

 Wings large, or mere strips, or absent. 



^^^ 



Fig. g8. Hippobosca Rufipes, left x 2 — right, natural size 

 {After Theiler) 



(a) Genus Hippobosca. 



Wings large, obtuse. No ocelli ; arista nude ; legs long 

 and extended. Claws bidentate. 



H. equini. Runs rapidly over the body ; is the [New] 

 forest fly of England. 



H, camelina. Attacks camels in Egypt. 

 . H. rufipes transmits Trypanosoma theileri (?). 



