NO. 1495. 



OBSERVATIONS ON ORANG SKULLS— HRDLICK A. 



557 



males, 6 females) an arch over a large foramen (see fig. 4^/), in six (1 

 male, 5 females) it consists only of two diverging lamina^ with wide 

 mesial separation, and in one case (female, No. 142201) there are or\\j 

 traces of even these lamina?. 



The lateral borders of the dorsum sella^ or its components, articulate 

 at their base, in many of the specimens, with a process from the point 

 of the petrous part over a quite spacious canal for the inferior petrosal 

 sinus; and a little farther laterad the free superior border of the petrous 

 bone shows a marked oval depression for the Gasserian ganglion. 

 This hollow is more pronounced than in man; in some of the speci- 



^IG. 5.— Skull of female fiRAxo (Cat. No. iji'ito U.S.N.M.), showing a DonxiTTiox ix size of 



THE MOLARS FROM THE FIRST BACKWARDS. 



mens projecting spicuhe from the superior border of the pc^trous bone 

 convert it into an incomplete foramen; and in one case (No. 142198) 

 there is on the right side a union of these processes, from which 

 results a complete spacious bony fenestrum (fig. 4/'). This feature, 

 so far as the writer could find, has not been reported previously either 

 in apes or man. 



The teeth. — Orang teeth in general have been studied thoroughly by 

 Selenka,'^' and there will be added in this place only a fe^v particulars. 



The male teeth are all larger than the corresponding ones of the 



« Menschenaffen, p. 57 et seq. 



