1891.] MAMMALS FROM EASTERN AFRICA. 183 



posteriorly, the notch behind it more than 5 millim. deep, as com- 

 pared to about 3 millim. in the two allied species. Tragus large 

 and broad, quadrangular, its tip sharply angular, and its outer upper 

 border long and straight. Lips apparently not deeply wrinkled. 

 Gular sac apparently present. Pads at base of thumb distinct. 

 Lower incisors 4. Colour everywhere above, and on the chin, 

 shoulders, and sides of thorax below dark brown ; chest, belly, base 

 of tail, and thighs to below knees pure white. 



Nyctinomus lohattts. 

 Under surface of head, showing ears and antitragus. a, tragus. Nat. size. 



Dimensions : — Head and body 77 milUm., tail 56 ; tail free from 

 membrane 30 ; ears, length from base of post-antitragal notch to 

 tip 30; forearm 63 (=2-47 in.). 



This fine new Bat is distinguished at once from all the other species 

 of the genus, except i\r. miarensis. Grand., and the two above- 

 mentioned, by its much greater size, none of them having a forearm 

 exceeding two inches in length. N. miarensis is at once separated 

 by its structural characters and is not really allied to N. hbatus. 

 Of the two species to which it is allied, N. a/ricanus is a native of the 

 Transvaal, and i\^. tceniotis of Abyssinia', extending northwards over 

 a great part of the Palsearctic region : the new form is therefore inter- 

 mediate between them in habitat as in many of its characters ; but 

 there can be no question as to the specific distinctness of all three. 



6. SciuRUs RUFOBRACHiATUs, Watcrh. 



a. Mount Elgon, in thick forest. 6000 ft. 2.5/2/90. 



b. Mount Elgon, in thick forest. 22/1/90. 



c. Mount Elgon. 



d. Savi, Mount Elgon. 14/2/90. 



This is a typically West-African species, and its occurrence on 

 Mount Elgon still further extends its known range to the eastward 



1 The Abyssinian T. midas, Sund., and N. ventralis, Heugl., are unquestionably, 

 as Mr. Dobson has sho^vn, synonymous with N. tceinotis. 



