110 
THE MAMMALS OE EGYPT. 
and which is probably identical with the bat called by Fitzinger ^ Plecotm cethiopicus. 
As in N. thehaica^ the upper incisors are bifid and the second lower premolar is slightly 
internal to the tooth-row. In the specimen marked “type,” the second lower premolar 
is half internal to the tooth-row, but in the specimen 48.8.19.11 it is wholly internal, 
and only differs from the same tooth in typical N. thebaicd in being larger; but in a 
specimen in alcohol received by the British Museum from Zanzibar after Dobson’s 
catalogue had been published, this tooth is only slightly internal to the tooth-row, and 
in an example of N. thehaica this tooth has much the same characters as in the last- 
mentioned specimen. 
N. cethiopica, however, seems to be distinguished from N. thehaica by its more 
broadly oval ears, by the greater development of the inward curvature of the internal 
border of the ear in its lower half, and by the greater size of the lobe or projection 
associated with it. The tragus has also a different form from that of PI. thehaica, as it 
is more forwardly curved, and instead of being rounded anteriorly it ends in a more or 
less defined point, below which its border is concave from before backwards. This 
bat, in whatever light it may be considered, either as a species or as a local race, 
unquestionably attains to a decidedly greater size than N. thehaica. The tragus of 
N. macrotis, Dobsou, from West Africa, has much the same form as that of 
N. oethiopica, but the ears of the former are considerably larger. N. cethiopica extends 
from Kordofan and Sennaar to the south-east as far as Zanzibar and Nyassaland. 
Another species of this genus also occurs in the Nile Valley at Khartum, viz. 
N. hispida, distinguished by the tragus attaining its greatest width opposite the base 
of its inner margin, by its inner margin being concave, by the trifid upper incisors, 
and by the second minute lower premolar being in the tooth-row. 
Dobson, who relegated N. fuliginosa, Peters, and N. damarensis, Peters, to N. capensis. 
Smith, as synonyms of that species, was inclined to the opinion that N. capemis itself, 
when a sufficient number of specimens were available for comparison, might turn out 
to be only a variety of W. thehaica, and that N. angolensis, Peters, would also have 
to be included. 
* SB. k. Akad. Wien, liv. i. 1866, p. 546. 
