60 Bulletin American Museum of Natural History [Vol. XLVII 



As indicated above, 20 of the 54 specimens were taken at Niapu, 

 all but three during the last half of the month of November; all were 

 adults in fresh pelage. Niapu is about 60 miles south of Poko, from which 

 locality a large series collected by Dr. Christy has been referred by 

 Thomas (loc. cit., 1915, p. 473) to this subspecies. 



Collectors' measurements of the Niapu series (12 males, 8 females) : 

 Total Length Head and Body Tail Vertebrae Hind Foot Ear 



& 587 (551-628) 284 (271-309) 301 (270-350) 69.8 (65-75) 22.3 (21-24) 

 9 591 (584-611) 283 (277-297) 307 (300-314) 69.8 (65-73) 22.0 (21-23) 



Skulls, same specimens: 



Greatest Length Zygomatic Breadth 



( = occipito-nasal length) ( = greatest breadth) 



& 67.23 (64.8-68.7) 37.5 (35.8-38.5) 



9 66.6 (64.6-68.7) 37.6 (36.3-38.1) 



Collectors' measurements of 15 adults (8 males, 7 females) from 

 other localities (Avakubi 3, Bafwabaka 1, Stanleyville 1, Gamangui 3, 

 Kamunionge 1, Medje 3, Ngayu 1, Niangara 2) : 



Total Length Head and Body Tail Vertebrae Hind Foot Ear 



d" 577 (557-590) 280 (261-296) 290 (277-314) 69.0 (68-71) 22.0 (21-24) 

 9 586 (570-610) 290 (284-296) 292 (280-315) 68.4 (65-71) 21.7 (20-23) 



Skulls, same specimens: 



Greatest Length Zygomatic Breadth 



( = occipito-nasal length) ( = greatest breadth) 

 & 66.5 (64.6-67.0) 36.7 (35.5-37.8) 



9 66.2 (64.5-68.5) 36.8 (35.4-38.0) 



The external measurements of the head, body, and tail 1 of the type 

 of centricola (an old female from Entebbe), "taken on the skin," consid- 

 erably exceed the averages given above, but the foot, allowing 5 or 6 mm. 

 for the claws, is about equal to the smallest records of our specimens 

 measured in the field, and the greatest length of the skull (66.5 mm.) 

 differs less than a millimeter from the average of the 35 adult specimens 

 from the Belgian Congo given above. 



The coloration of this large series is rather uniform, half -grown speci- 

 mens differing scarcely at all from the adults. A few of the latter, in 

 somewhat worn pelage, are a little pale from evident bleaching. The 

 extension of the gray of the dorsal region forward upon the head varies 

 somewhat, in some specimens gray-tipped hairs covering the crown as 

 far as the eyes, in others only as far as the front base of the ears. 



*" Head and body (overstretched) 310 mm.; tail, 330; hind foot, 61." 



