1917.] Lang and Chapin, Distribution and Ecology of African Chiroptera. 495 



The Rhinolophidse are a large family. The body is covered with 

 relatively long hair, that sometimes appears frizzled; a Y-shaped, short- 

 haired area on the back is typical of some forms. Horseshoe-like, com- 

 plicated nose-leaves (Plate LI and Plate LII, Fig. 1) are especially 

 characteristic. The large ears are without a tragus, the moderately long 



Fig. 17. Interfemoral membranes: A. Rhimopomida; (Rhinopoma microphyllum) , from be- 

 neath; B. Emballonuridae (Taphozous mauritianus) , from above; C. Nycteridse (Nycteris arge), from 

 below; D. Molossidae {Nyctinomus ansorgei), from above. All f. For interfemoral membrane of 

 Megadermida?, see Fig. 22 (p. 537) ; of Rhinolophid«, Figs. 5 and 6 (pp. 436, 437) ; of Vespertilionida?, 

 Figs. 7 (p. 448) and 22 (p. 537). 



caudal membrane is supported to the very tip of the tail. Their flight is 

 rather spasmodic, but swift. They feed on a great variety of insects. 



The Vespertilionida? represent the largest group and comprise the ordi- 

 nary bats of temperate climates. This family consists mostly of small 

 forms, with loose fur, a short head, small nostrils terminating in an obtuse 



