EAST AX^RICAN MAMMALS IX NATIONAL MUSEUM. 93 



EIPTESICUS GRANDIDIERI (Dobson). 



1876. Vesperugo {Vesperus) grandidieri Dobson, Ann. Nat. Hist., ser. 4, vol. 18, 

 p. 500. (Zanzibar; type in Paris Museum.) 



Specimen: One, in alcohol, from — 



British East Africa : Southern Guaso Nyiro River (Mearns) . 



This specimen agrees in every detail with Dobson's description of 

 E. grandidieji, except that the hair extends thinly over the greater 

 part of the anterior half of the interfemoral membrane. In the 

 original account, it is stated that the fur "scarcely" extends upon 

 the "membranes.'' The species is readily distinguished from the 

 other small brown forms of Eptesicus known in East Africa by the 

 distinctly bicuspidate upper inner incisoi-s and the great length of 

 the outer upper incisors, whicli reach nearly to the tip of the outer 

 cusp of the inner incisor. 



Genus NYCTICEIUS Rafinesque. 



1819. Nycticeius Rafinesque, Journ. Phys., vol. 88, p. 417. June. (iV. humer- 



alis.) 

 1875. Scoteinus Dobson, Proc. Zool. Soc. London, p. 371. (iV. emarginatus.) 



The old v/orld species of bats usually placed in the genus Scoteinus 

 do not seem to differ generically from the American species of Nyc- 

 ticeius. 



NYCTICEIUS AFRICANUS Alien. 



1911. Nycticeius africanus G. M. Allen, Bull. Mus. Comp. Zool., vol. 54, p. 328. 

 December. (Meru River, British East Africa; type in Mus. Comp. 

 Zool., Harvard.) 



Specimens. — Fifteen, from localities as follows: 



British East Africa: Archer's Post, 2 in alcohol (Heller); Kara 

 River, Marsabit Road, 4 (Heller) ; Lakiundu River, 5, including 3 in 

 alcohol (Heller) ; Mount Lololokwi, 3, including 1 in alcohol (Heller) ; 

 Quoy, Marsabit Road, 1 (Heller). 



This species seems closely related to Nycticeius schlieffeni Peters 

 and should, perhaps, be treated as a subspecies of that form. 



Genus SCOTCECUS Thomas. 



1901. Scotcecus Thomas, Ann. and Mag. Nat. Hist., ser. 7, vol. 7, p. 263. March. 

 (S. alhofusctis .) 



This genus is closely related to Nycticeius and even more closely 

 to the American genus Nyderis. The resemblance of the skuU to 

 the skuU of' Nycteris horealis is very striking, and the presence of the 

 small upper premolar in a large per cent of specimens leaves the 

 genus separable from Nycteris only by the unfurred interfemoral 

 membrane. 



