430 



Bulletin American Museum of Natural History. [Vol. XXXVII, 



P 2 is greatly reduced but stands in the toothrow, closely crowded between the 

 canine and p 3 . 



A peculiar and strongly marked feature of this species is the axillar 

 gland, rendered conspicuous by a short tuft of stiff rust-colored hairs. 



22. Hipposideros caffer centralis Andersen. 



Hipposideros caffer centralis Andersen, Ann. and Mag. Nat. Hist. (7), XVII, 

 p. 277, March, 1906. Entebbi, Uganda. 



Thirty-nine specimens, of which 22 are skins with skulls and 17 are 

 alcoholic. The sexes are about equally represented; only one specimen is 

 immature (about half-grown). They were collected as follows: Leopold- 

 ville, 1, July 10, 1909; Avakubi, 14, Sept. 9-Dec. 2, 1909; Medje, 12, Jan. 

 20-22, March 11, 23, August 3, 1910; Niangara, 2, Nov. 19, 1910; Faradje, 

 4, Oct. 22-Nov. 20, 1911; Aba, 3, Dec. 13, 1911; Poko, 3. 



Field measurements by the collectors: 



Avakubi, 5 specimens: Total length, 93 (86-101); head and body, 58 

 (55-62); tail, 30.8 (30-39); foot, 10 (10-10); ear, 15.2 (14-16). 



Medje, 7 specimens: Total length, 91.7 (88-97); head and body, 

 57 (53-61); tail, 30 (30-39); foot, 10.4 (10-11); ear, 16.3 (14-18). 



Forearm: Avakubi, 6 specimens (from skins), 49.3 (47.2-51.2); 7 speci- 

 mens (alcoholic), 49.7 (48-51). Medje, 7 specimens (from skins), 52.7 

 (50.9-54.8). 



As shown by the foregoing, the series from Avakubi is slightly smaller 

 in length of forearm than the Medje series, while the collectors' measure- 

 ments of the Avakubi series average larger. The skull measurements of 

 the two are slightly larger in the Medje series. 



Average Measurements of Skulls. 



Avakubi 5 skulls Medje 9 skulls 



Total length • 18.3(17. 9-19) 18 . 8 (18 . 4-19 . 8) 



Zygomatic breadth 9.7(9. 4-10) 10.3(9. 8-10 . 6) 



Maxillar breadth 6.2 ( 5.7- 6.6) 6.8 ( 6.2- 7.2) 



Breadth at base of canines 3.9(3.7-4.2) 4.4(4 -4.6) 



Upper toothrow (c-m 3 ) 6.1 ( 5.9- 6.5) 6.6 ( 6.1- 7.4) 



Lower jaw (front of incisors to back of condyle) 11 . 4 (10 . 9-11 . 9) 11 . 8 (11 -12 . 4) 



Lower toothrow (c-m 3 ) 7.0 ( 6.4- 7.6) 7.9 ( 7 - 8.4) 



In the Avakubi series only one skull has a total length of 19 mm. and a 

 zygomatic breadth of 10 mm.; in the Medje series 4 skulls exceed 19 mm. 

 (19.1-19.8) in length, and all but two reach or exceed 10 (10-10.6) in zygo- 

 matic breadth. The minimum of the Medje series equals the minimum 



