rtcrocyon, Rousettus, and Myonyctcris. 503 



A", p- deciduous ; nape and shoul- 

 ders seniinakt'd. Foroarni 

 79-8;j'5 mm. Cevlon .... H. seminuchis. 

 fV. fWjSubcircular in outline; width 

 of ears (flattened) 10-13 mm. 

 c". ;/■* not deciduous. Forearm 



77-87"2mm, Indo-Malayan. R. amplexicatidatus* . 

 d". J)- deciduous. Forearm (J9'5- 



75 mm. Austro-Malavan . . R. brachyotis- 



d*. Molars unusually narrow ; bony 



palate nanow ; fur lonfrer ; 



notopatag-ium and tibije well 



haired. Forearm 72'5-75 mm. 



Celebes R. celehensis. 



il-. "Wings from back of 2nd toe ; fur 



long and dense. 



e^. Frontal region of skidl between 



postorbital processes concave ; 



molars of normal breadth ; lower 



leg short : 29-31 mm. Forearm 



79-83"5. Ethiopian R. anf/olensi's. 



f\ Frontal region of skull between 

 postorbital processes flat ; molars 

 excessively narrow ; lower leg 39- 

 40 mm. Forearm 88o-90. Ethio- 

 pian R. lanosus. 



h. Cranial rostrum shortened : front of orbit 

 vertically above back of }>* ; basicranial 

 axis nearly parallel to alveolar border. 



Ethiopian Myonyctcris . 



c' . Small: forearm 60-67 mm. Equatorial 



Africa M. coUaris. 



I. Ptekocyon, Pet. 



Tvpe. 



1801. Plervcyon, Peters, MB. Akad. Berlin, p. 423 Pt. hehus. 



1881. Leiponyx, Jentink, Notes Leyden Mus. iii. p. 60 [nee 



Lipony.i; Vieillot, 1816, a genus of birds] Pt. heivrts. 



Basicranial axis considerably deflected : alveolar line pro- 

 jected backward passing through bases of post-tympanic and 

 paroccipital processes. Rostium long : front of orbit vertically 

 above posterior half or middle of m^. Tympanic produced 

 externally into a short tubular bony auditory meatus (a 

 peculiarity unique among bats). Preraaxillaries separated 

 in front. Cutting-edges of lower incisors simple (not bitid). 

 p^ in cross section twice the size of an upper incisor, twj 

 equal in length to m^ a»id m^ combined. Palate ridges 

 4-1-3-1-3. Size large : forearm 114-132 mm. 



Range. — IMadagascar ; African continent, from Sennaar 

 and Senegambia in the north to Nyasaland and Namaqua- 

 land in the south ; S. Arabia. 



• On R, minor, see p. 509. 



