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



shown in females; the males in the red phase are much less rufous, both 

 above and below, the upperparts being of a much darker and less reddish 

 tone, and the ventral surface is seldom brighter (yellowish buff). 



Many of the males and some of the females are so nearly intermediate 

 between the two phases that it is difficult to assign them satisfactorily to 

 either. None of the specimens is young enough to indicate the character 

 of the immature or juvenile pelage. 



Hipposideros abce is allied to the H. caffer group, from which it differs in 

 considerably larger size, and lighter and more buffy underparts. H. caffer 

 centralis occurs with H. abce at the type locality of the latter. Average 

 length of forearm in H. aboe (35 specimens), 58 mm.; of H. caffer centralis, 

 50; total length, H. abce, 101, H. c. centralis, 92. Skull, H. abce, 23 X 13.3; 

 of H. c. centralis, 18.5 X 10. 



25. Hipposideros nanus sp. nov. 



Type, No. 49426 (alcoholic), 9 ad., Faradje, Uele district, Belgian Congo, 

 Oct. 24, 1912; Herbert Lang and James P. Chapin. American Museum Congo 

 Expedition. Orig. No. 1689. 



A very small species of the H. beatus type. 



Upperparts dusky brown, the hairs dark at base and tips with a broad median 

 zone of white; underparts lighter, the hairs with grayish tips; ears and membranes 

 dark brown. 



Total length, 68 mm.; head and body, 46; tail, 22; forearm, 43.4; third meta- 

 carpal, 31; tibia, 16.5; foot, with claws, 7.9; ear, length, 9.2, width, 12; greatest 

 breadth of horseshoe, 5; of posterior leaf, 5.5. 



Skull, total length, 16.2 (16.8) 1 ; zygomatic breadth, 8.2 (9.7); mastoid breadth, 

 8.5 (9.2); maxillary breadth, 5.5 (7), breadth at base of canines, 4.5 (4.3-4.7); man- 

 dible, 9.5 (10.7-11.3); upper toothrow (c-m 3 ), 5.2 (5.9-6.2); lower toothrow, 5.7 

 (6.2-7). 



Represented by only the type. 



Hipposideros nanus is nearly related to H. beatus Andersen (I. c, p. 279), 

 from near Benito River, Guinea, and may be considered as its geographical 

 representative in the Uele district of northeastern Belgian Congo. 



26. Hipposideros langi sp. nov. 



Text Figs. 4-6. 



Type, No. 49098 (skin and skull), ad., Avakubi, Jan. 24, 1914; Herbert Lang 

 and James P. Chapin. American Museum Congo Expedition. Orig. No. 2481. 



A large species, with long, soft, woolly pelage, allied in general features to Phyl- 

 lorhina cy clops Temminck. 



1 The measurements in parentheses are the corresponding measurements of 2 skulls of H. beatus 

 as given by Andersen, Ann. and Mag. Nat. Hist. (7), XVII, p. 281, March, 1906. 



