071 Troglodytes Niger. 



373 



Borneo — though, perhaps, at a later period of life. "The 

 persistence of the cranial sutures," therefore, ceases to be a 

 specific character of the Cliimpanzee. The existence of two 

 infra-orbitar foramina in one specimen, and of three in the 

 other, would seem to show, that in this respect, the Ourang and 

 Chimpanzee did not materially differ ; and the same remark 

 holds good with regard to the anterior condyloid foramina, 

 which are enumerated by Prof. Owen, among the distinctive 

 marks of the two species. 



The adjoined table is intended to give the comparative 

 measurments of the two crania, which will be found to coin- 

 cide very nearly with each other, and if comparison be insti- 

 tuted between them, and the dimensions given by Prof. Owen, 

 the correspondence will be found equally striking. 



Tahle of Measurements of the two adiiJt crania. 



No. 1. (No. II 



edge 



edge 



Length of head from most prominent part of occiput to end of! 

 incisor, ..,.......! 



From same part of occiput to outer edge of superciliary ridge . 

 median line, ....... 



From same point of ridge to edge of incisor, 

 Vertex to condyle of occiput lowest point, . 

 Diameter through post-auditory ridges, 



" behind orbits, ...... 



Width of coronal belt, narrowest part, 



Diameter of face at zygoma, most prominent point, . 



Length of zygomatic fossa, ..... 



Breadth of " " 



Diameter of face from outsides of orbits on level with lower 

 Interorbital space, narrowest part, .... 



Lateral diameter of orbit, ...... 



Perpendicular diameter of orbit, .... 



Nasal aperture transverse diameter, .... 



'' " perpendicular, ..... 



Distance between infra orbital foramina (lower). 

 Breadth of maxilla superior, ..... 



Length of bony palate, ...... 



Anterior margin of intermaxillaries to foramen incisivum, 

 Breadth of crown of first incisor, .... 



Space between canine and incisor (upper), 



'♦ " " " " lower, . 



Anterior margin of occipital foramen to posterior margin of 

 palate, ...... . . 



Lower jaw from centre of condyle to symphysis on upper 



Angle to symphysis lower edge, 



Angle to condyle, 



Between angles, . 



Breadth of ramus, 



Between mental foramina, . 



in. 



7.3 



5.2 

 3.7 

 3.9 

 4.6 

 27 

 1.5 

 4.6 

 1.8 

 1.0 

 4.0 

 0.7 

 1 5 

 1.2 

 1.1 

 1.0 

 2.2 

 24 

 2.7 

 0.9 

 0.4 

 0.3 

 0.5 



2.1 



4.5 



3.1 



2.3 



3.0 



1.5i 



1 8 



in. 



7.6 



5.3 

 3.7^ 



3.9 



4.7 



2.7 



0.9 



4.7 



ISh 



1.0 



39 



0.8 



1.5 



1.4 



0.9-^ 



l.Oi 



2.1 



24 



2.7 



o.si 



2.3 



