422 



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



8. Myonycteris wroughtoni K. Andersen. 



Myonycterls wroughtoni Andersen, Cat. Chirop. Br. Mus., I, 1912, p. 580. Likati 

 River, Welle district, N. E. Congo. 



Four specimens: 1 adult male, 2 adult females, 1 half -grown young, 

 Medje, April 4, 16, and Sept. 6, 1914. 



The three adults are slightly smaller than the measurements given by 

 Andersen of the male type and male paratype, although the teeth in the 

 Medje specimens are considerably worn, indicating full maturity. The 

 forearm averages 4 mm. shorter, with all other wing measurements in 

 proportion. The skull measurements are also slightly less, averaging about 

 1 mm. shorter, and the zygomatic breadth is fully 1 mm. less, with other 

 skull measurements proportionally smaller. The neck ruff in the male is 

 also dull yellow orange instead of "tawny olive." One of the females 

 (taken April 16) has the upperparts vandyke brown, a little lighter across 

 the neck and on the head than the back. The male (taken April 4) is much 

 lighter, the upperparts being light brown with a faint suffusion of cinnamon 

 buff, lighter on the head and hindneck. The other adult female, taken 

 September 6, hanging in a bush with the young one, has the upperparts 

 tawny, the head and shoulders a little lighter than the back, and is thus 

 very different in color from the young one taken with her, and from the 

 other adult female taken in April. These color differences may be in part 

 seasonal, or merely individual. 



Collectors' measurements: Head and body, cT 130, 9 114, 9 162; 

 tail, d 1 4, 9 12, 9 6; foot, & 18, 9 18, 9 22; ear, 18, 9 19, 9 20. 



Measurements of Skull and Forearm. 











Upper 



Lower 





Across 











Zygom. 



teeth 



teeth 



Palatal 



m 3 — m 3 





Cat. No. 



Sex 



Length 



breadth 



(c-m?) 



(c-m3) 



length 



outside 



Forearm 



48755 



cf 



33.7 





12.7 



13.5 



16.6 



9.8 



60.7 



48752 



9 



32.9 



20 



12.7 



14.5 



16 



10.1 



61 



48754 



9 



33.6 



19.8 



12 



13.7 



16.7 



9.2 



64 



Type 1 



& 



34 



21 



13 



14.5 



16.5 



10.2 



67 



Paratype 1 









13.8 



14.5 



16.8 



10.4 



65 



* 



1 From Andersen (I. c, pp. 583-584), for comparison. 



