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



Measurements of Skull and Forearm in 3 Males and 5 Females. 1 









Zygom. 



Maxill. 



Palatal 



Palatal 





Cat. No. 



Sex 



Length 



breadth 



toothrow 



length 



breadth 



Forearm 



48724 



c? 



51.4 



28.6 



11.5 



26.4 



16 



96 



48725 



c? 



51 



28 



12.1 



26.1 



15.3 



97 



48729 



c? 



52.5 







11.6 



25.6 



15.4 



— 



Average 





51.6 



28.3 



11.7 



26.3 



15.6 





Minimum 





51 





11.5 



25.6 



15.3 





Maximum 





52.5 





12.1 



26.4 



16 





48714 



9 



44.5 



27.3 



10.8 



22.3 



14.7 



91 



48719 



9 



44.4 



26.2 



10.8 



22.5 



14.6 



87 



48721 



9 



45 



25.5 



10.1 



21.5 



14 



92 



48723 



9 



44.4 



27.1 



10 



21.5 



14.2 





48726 



9 



45.8 



27.2 



11.4 



22.4 



14 



88 



Average 





44.9 



26.6 



10.6 



22 



14.3 



89 



Minimum 





44.4 



25.5 



10 



21.5 



14 



87 



Maximum 





45.8 



27.3 



11.4 



22.5 



14.7 



92 



As shown above, the males considerably exceed the females in size. In 

 two of the adult males the shoulder tufts are white, in the other deep yellow. 

 There is a wide range of color variation, due apparently to differences in 

 age. In one of the females (No. 48723) there is a minute premolar in front 

 of p 3 , and another female (No. 48719) has four upper incisors, probably 

 the outer pair retained from the milk dentition. 



3. Hypsignathus monstrosus H. Allen. 



Plate XLIV, Fig. 4; and Text Figs. 2 and 16 (p. 485), 18-20 (pp. 503, 



506, 507). 



Hypsignathus monstrosus H. Allen, Proc. Acad. Nat. Sci. Philadelphia, 1861, 

 p. 157. West Africa (= Gaboon). 



Thirty specimens (26 skins, 4 in alcohol), collected as follows: Avakubi, 

 19; Stanleyville, 4; Bafwabaka, 6; Penge, 1. Adult males, 10; * adult 

 females, 4; immature specimens, 16. 



Collectors' measurements (9 adult males, 4 adult females) : 



Head and body Tail Foot Ear 



d 1 253 (248-260) 0 38 (36-40) 36 (35-39) 

 9 203 (198*210) 0 35 (33-36) 33 (31-34) 



Expanse of wing, two males, 950 and 967; one female, 840. 



1 Measurements as in preceding tables. 



