1026 
In a female skull these. dimensions and ratio were 63 mm., 46 mm. 
and 1.37:1. Greatest, viz. 1.52:1, was the ratio of a male skull 
with 70 mm. palato-maxillary breadth, and 46 mm. dental length. 
The mean dental length, determined by FLowrr') from twenty-two 
male Australian skulls, was 45.9 mm., and from fourteen female 
skulls 44 mm., from nine male Tasmanian skulls 47.5 mm., and 
from four female skulls 44 mm. 
Frower’s dental index (dental length > 100: basal length) was 
44.8 for Australian, and 47.5 for Tasmanian male skulls, 46.1 for 
Australian and 48.7 for Tasmanian female skulls. At the skull of 
Wadjak I this index is 44, hence the dental length is relatively 
small, probably still smaller in Wadjak II. 
The breadth between the outer margins of the 2™" upper molars 
at the fossil skull of Gibraltar is 71 mm. according to Kerrn, the 
dental length, from his drawings (mean of left and right row of 
teeth) 45 mm.?). The breadth is to the length as 1.57:4. Almost 
perfectly the same ratio, 1.56:1 for 75 mm. breadth and 48 mm. 
dental length, is presented by the upper dental arcade of the fossil 
man of La Chapelle-aux-Saints in tbe reconstruction of Bourr*). 
Accordingly Homo wadjakensis resembles Homo neandertalensis in 
this large relative breadth of the upper dental arcade. 
This, however, holds only for the greatest breadth (measured at 
the molars) of the upper dental arcade; the form of this arcade is 
very different. Whereas the curvature of the arcade of the Neander- 
tal Man continues regularly forward, the arcade curve of the upper 
teeth of Homo wadjakensis, especially of the male individual, changes 
its form anteriorly to the molars. The three molars lie in a 
parabolic line of greater parameter, the foremost half of the teeth 
row (the praemolars, canini, and incisivi) in a similar line of smaller 
parameter, so that for the row of the molars the dental arcade 
narrows, but not gradually. The parabolic line of the foremost half 
of the dental arcade departs only little from the almost uniform 
line, in which the whole dental arcade of the lower jaw lies. In 
fact, the front half of the dental arcade of the upper jaw projects 
little at the praemolars (of course not at all at the incisivi) beyond 
that of the lower jaw; the upper molars, however, project greatly 
outside the lower molars. The width between the outer margins of 
1) FLOWER, l.c., p. 186. 
2) KEITH, l.c, 5 149 — 151. 
8) MARCELLIN BouLe, L'Homme fossile de la ORDE: aux-Saints. Extrait des 
Annales de Paléontologie. (1911—1913). Paris 19138, p. 100, fig. 60. The dental 
index (FLOWER) was only 38. 
