THE FAMILIES AND GENERA OP BATS. 215 



Genus L^EPHOTIS Thomas. 



1901. Lwphoiis Thomas, Ann. and Mag. Nat. Hist, 7th ser., VII, p. 460, 

 May, 1901. 



Type-species. — Lcephotis wintoni Thomas. 



Geographic distribution. — British East Africa. 



Number of forms. — Only the type species is thus far known. 



Characters.- — Very similar to Histiotus, but differing in the follow- 

 ing particulars: Tragus spatulate, narrowed just above middle; 

 skull with less elevated braincase, its general form much as in Lasi- 

 onycteris, except that rostrum is slender and not flattened ; zygomata 

 longer and nearly parallel, not so abruptly bowed outward; audital 

 bulla? smaller than in Histiotus, rather larger than in Lasionycteris, 

 their diameter about equal to distance between them. The teeth are 

 throughout as in Histiotus. 



Species examined. — Lcephotis wintoni Thomas. 



Remarks. — The very striking similarity of this African genus to 

 the South American Histiotus may be the result of parallel develop- 

 ment from some Eptesicus-like ancestry, but I am inclined to believe 

 that it indicates a relationship much less remote. 



Genus OTONYCTERIS Peters. 



1859. Otonycteris Peters, Monatsber, k. preuss. Akad. Wissensch, Berlin. 



p. 223. 

 1878. Otonycteris Dobson, Catal. Cbiropt. Brit. Mus., p. 181. 



Type-species. — Otonycteris hemprichii Peters. 



Geographic distribution. — Northern Africa and central and south- 

 western Asia. 

 Number of forms. — Two species of Otonycteris are now known. 

 Characters. — Dental formula : 



-2-.1. 4567 . 1-1 1-1 1-1 3-3 



12 3. 1.-2-4567*3-3' ° 1 -V pm 2-2' m 3- 3~ rfU - 



Externally like a large Myotis, the ears proportionally larger, but 

 not differing appreciably in form. Skull essentially like that of the 

 larger species of Eptesicus, but deeper in interorbital region and 

 slightly narrower in general outline ; interorbital region flat dorsalry, 

 the edge of the orbit forming a distinct angle that suggests an incipi ■ 

 ent postorbital process ; audital bulla? very large, though not peculiar 

 in form, their greatest diameter about three times the distance 

 between them and slightly more than width of palate between last 

 molars. The teeth resemble those of Eptesicus, except for the ab- 

 sence of the outer incisor and for the following details in structure: 



