1917] Allen, Lang and Chapin, Bats from the Belgium Congo. 439 



dense fur well defined; upperparts anterior to the Y-patch with the fur much longer 

 and looser and of a pale brownish gray, the extreme tips of the hairs, particularly 

 on the posterior third of this area, whitish; still paler on the top and front of the 

 head; sides of the head lighter than the top, and joined by a narrow still lighter 

 band enclosing the nose-leaf area; sides of back grayish posteriorly, like the anterior 

 back, separated from the Y-patch by a whitish transverse band about 13 by 6 mm. 

 in extent; a patch of clear white on the sides beneath the junction of the propatagium 

 with the body and extending slightly in front of it, bounded ventrally by a band of 

 dark hair-brown fur, a lateral extension of the dorsal Y-patch; general color of 

 underparts yellowish gray, with a broad median band of dusky gray, the fur darker 

 basally; ears, feet and membranes blackish. Ears long and tapering, the extreme 

 tip slightly rounded. Membranes attached about 5 mm. above tarsal joint. Sup- 

 plementary leaflets three, well-defined. 



Collectors' measurements: Total length, 137 mm.; head and body, 107; tail, 

 30; foot, 25; ear (from outer base), 35. 



Forearm (in skin), 104; third metacarpal, 72; tail, 30; lower leg, 40.5; breadth 

 of nose-leaf, 11.7. 



Skull, total length, 35.3 (39.8 1 ); zygomatic breadth, 20 (22.2); mastoid breadth, 

 15.8 (18.2); maxillary breadth, 14 (14.2); antorbital breadth, 11 (11); across cin- 

 gula of canines, 10.5 (11.6); mandible, 24.4 (27.8); upper teeth, 13.5 (13.8-14.5); 

 lower teeth, 15.5 (16-16.3). 



The single specimen of H. niangarce is a fully adult female, with a 

 strongly developed sagittal crest, but the teeth are not appreciably worn. 

 It has the coloration and general characters of H. gigas, from which it differs 

 in much smaller size, the forearm measuring only 104 mm. as against 108- 

 116 mm. given by Andersen (/. c, p. 48) for 6 specimens of H. gigas 2 ; while 

 the total length of the skull is 35.3 as against 39.8 given by Andersen for 

 gigas, with other skull measurements proportionally less. 



The type locality of H. gigas is the Benito River in Angola, and the 8 

 specimens cited by Andersen are likewise all from Angola. The type, and 

 apparently the only recorded specimen, of H. gigas gambiensis is from 

 Gambia, in the same general region. On the other hand the type of nian- 

 garoe is from the Uele district of the Belgian Congo, a region of quite differ- 

 ent physical conditions and more than a thousand miles westward. 



Vespertilionid^e. 



28. My otis bocagii bocagii (Peters). 



Vespertilio bocagii Peters, Jorn. Sci. Math.-Phys. e Nat. Lisboa, 1870, No. 10, 

 p.. 125, Dec. 1870. Portuguese West Africa. 



1 The measurements in parenthesis are those given by K. Andersen for H. gigas (Ann. and Mag. 

 Nat. Hist. (7), XVII, 1906, p. 48). 



2 The average of 4 skulls given by Andersen (I. c, p. 40, last footnote) is 110.25. 



