353 



G. A. J. VAN DER SANDE. 



Table XVIII. Skull of Un grau (Humboldt Bay). 



Capacity 



Horizontal circumference 



Sagittal „ „ 



Frontal part (34°/o) 



Pariétal „ (360/0) 



Occipital „ (30%) 



Vertical transverse circumference 



n » 11 11 over bregma 



Total médian circumference 



Maximum length 



Horizontal „ 



Intertuberal „ 



Nasion — protuberantia occipitalis .... 



Basai length 



Occipital „ 



Basio-alveolar length 



Auriculo-orbital „ 



Height 



Vertical height 



Ear-height 



Auxiliary ear-height 



Opisthion — -/ 3 sutura sagittalis 



Opisthion — lambda 



Maximum breadth 



Biparietal „ 



Biasterial „ . . . 



Auricular „ . . . 



Bicoronal „ . 



Upper facial „ . . . 



Bizygomatic „ . . . 



Bimalar „ . 



Minimum frontal breadth . 



1 190 c.m. J 



■ • 491 

 . . 362 

 . . 122 



• • 130 



1 10 



. . 298 



• • 293 



• • 499 

 . . 179 

 . . 176 



• • 177 



• • 173 

 . . 101 



• • 53 

 . . 101 

 . . 70 



■ • 133 



• ■ 132 

 . . 112 

 . . 114 

 . . 122 



• • 94 

 . . 129 



• • 123 

 . . 10S 

 . . 112 

 . . 106 

 . . 1 10 

 . . 129 



• ■ 94 

 . . 92 



Bistephanic breadth 101 



Bijugal „ 107 



Interorbital „ 29 



Orbital „ 41 



Nasal „ 27 



Minimum breadth of both oss. nasalia 12 



Breadth of base 99 



Frontal height 108 



Nasal „ 49 



Length of proc. nasal, oss. frontis 12 



Orbital height 37 



Upper face height 69 



Length of foramen magnum 35 



Breadth „ „ „ 2S 



Maxillary length 59 



Molar „ 42 



Length-breadth index 



„ -height „ 

 Breadth- „ „ 



72.I 



74-3 

 103. 1 



Nasal index 55.1 



Orbital „ 90.2 



Maxillary „ 100.0 



Molar „ 41.6 



Upper facial index (KOLLMANN) 53.5 



Stephano-zygomatic index 78.3 



Cranio-facial index 100.0 



Gnathic index 100. o 



Facial angle (Ranke) 80° 



Nasal „ 85" 



Alveolar „ 64 



Modulus 140.0 



Seen in the norma verticalis (PI. XXX, fig. 2), the frontal part is narrow, the 

 sides being straight and gradually diverging towards the pariétal eminences. 



The norma lateralis (fig. 3) shows a prominent glabella, extending far upward, 

 with an inclined forehead. The arching of the parietalia is regular and forms the highest 

 élévation, placing the skull in the German plane, about 2 cm. behind the bregma. The upper 

 part of the os occipitale is slightly convex, the lower part fairly steep. The protuberantia 

 occip. ext. is feebly developed, but there exists a strong torus occipitalis. The latéral parts 

 of the nuchal portion are strongly arched ; the margo parietalis is the longest. 



In the norma occipitalis (fig. 4) the pentagonal form is very striking; the cranial 

 vault has a keeled form (which also causes the great breadth-height index), connected with 

 flat dépressions of the upper parts of the parietalia, having prominent bosses, below which 

 the sides converge slightly downward. 



In the norma frontalis (fig. 1) the feeble development of the forehead is plainly 

 apparent as well in height as in breadth, and the whole facial portion makes a decidedly 



