C'ASIXYOTRRIS. 



the mcflian angle in coniiiuiation with the long and high vomerine 

 ridge. Orhito-temporal cavity considerably expanded laterally, the 

 zygomata therefore standing widely out laterally; postorbital 

 processes very thin, hut rather longer than in Scotonycteris ; 

 temporal ridges as in Scotonycteris not united to form a sagittal 

 crest. Horizontal rami of mandible even more thickened in the 

 region below p^-ra„ than in Scotonycteris; coronoid process higher, 

 broader, and less sloping. 



1^ r c p p m 

 Dentition (figs. 43 and 44). — 



28. 



1, '2 c P, V, Pi m, m,^ 

 Pentul formula as in Scotonycteris and all other Epomophorine 

 hats, except Flerotes. 



Upper and lower incisors quite as in Scotonycteris. Canines 

 conspicuously longer and slightly slenderer ; upper canine with a 

 faint indication of a vertical groove on antero-medial surface of 

 crown. Premolars and molars shortened and broadened, sub- 

 circular in transverse section, as in Scotonycteris, but m' and m.^ 



Fi''. 44. — x^. Eight p3. p-*, till, ^nd left \i^. ]■>^. 111,. viewed from behind, 



ot" Casiin/cteris orgi/nnis {type of species). 

 iV . B. Corresponding teeth, in same view, of Scotonycteris :enl;eri 



■" (type of 5. bedfordi). 



5 (linear). 



not quite so much reduced in size, m' being only slightly smaller 

 than (in Scotonycteris about one-half the bulk of) p\ and m^ 

 considerably larger than (in Scotonycteris subequal to) p^. Outer 

 ridge of p^-m' and Pj-m,, as in Scotonycteris, high and cusp-like ; 

 inner cusp of p^ and Pg well-developed and separate (in Scotonycttris 

 suppressed or fused with outer) ; outer and inner cusps of p', P3, 

 and Pj even distinctly diverging at tips (see tig. 44). 



Falate-ridr/es {i\g. 45). — Five interdental and a large number of 

 irregular, thin and serrate ridges crowded together on postdental 

 palate. Four anterior ridges thick and prominent ; hr.st ridge 

 closely behind canines, second between p^-p^, third between p'-p\ 

 fourth between m'-m'. Fifth ridge closely behind fourth, between 

 m'-m',but with lateral extremities immediately behind m', thinner 



