1917.] Allen, Lang and Chapin, Bats from the Belgian Congo. 419 



Fig. 2. Hypsignathus monstrosus. Direct front view of head, adult male, from a freshly killed 

 specimen, j . 



See also Text Figs. 16 and 18 (pp. 485 and 503) for illustrations, respectively, of head and cheek- 

 pouches, and Text Figs. 19 and 20 (pp. 506 and 507) for laryngeal and visceral anatomy. 



Measurements of Skull and Forearm in 10 adult Males and 4 adult Females. 





Sex 



Condylo- 



Zygom. 



Upper 



Palatal 



Palatal 





Cat. No. 



basal length 



breadth 



pm-m. series 



length 



breadth 



Forearm 



48629 



9 



61 



32.5 



13.8 



30 



19 



123 



48652 



9 



60 



33.3 



13.5 



30 



18.4 



121 



48628 



9 



60 



32.5 



14 



30 



17.8 



121 



48636 



9 



60 



33 



14.8 



30.6 



19 



118 



48637 



€? 



72 



36.4 



15 



36.3 



21.4 



134 



48638 



CP 



73.5 



37 



16 



38.5 



23.3 



137 



48639 



c? 



70.3 



37 



16.7 



36.2 



22 



132 



48640 



c? 



71.8 



37 



15.7 



37 



22 



134 



48641 



& 



71 



37.3 



15.5 



35.3 



21.2 



137 



48642 



d" 



70.5 



37.3 



15.3 



36 



23 



131 



48648 





72 



37.5 



15.8 



36 



22.4 



133 



48649 



d\ 



73.2 



38.6 



16 



37 



23 



133 



48653 



& 



70.8 



35.6 



15.6 



36 



21.8 





48654 



& 



72.5 



36.8 



16 



36 



22.3 



131 



Average 



10c? 



71.8 



37 



15.8 



36.5 



22 



133 



Minimum 





70.3 



35.6 



15 



36 



21.2 



131 



Maximum 





73.5 



38.6 



16.7 



38.5 



23.3 



137 



Average 



49 



60.2 



32.8 



14.2 



30.2 



19.5 



121 



The females in this species are much smaller than the males. 



