1033 
mena occur at the crowns of the molars of Homo wadjakensis in 
a no less degree than in recent men. The hindmost lingual cusps 
of the second and the third molar of the upper jaw of Wadjak II, 
and particularly of Wadjak I are little developed. In connection 
with this the mesio-distal dimension is relatively small, especially 
in m, of Wadjak I. In Wadjak II the crown of mm, shows on the 
backside, in the middle a small accessory cusp, which reminds of 
what has been described by Emir, Setunka about the Orang-utan, 
and which was also found in Man in rare cases. 
The total length of the canine of the upper jaw of Wadjak II 
measured on the skiagram, is 29 mm. Münrreirer found 37 mm. 
as maximum of all living races. Thus measured, the length of the 
roots of the upper m, is 14 mm., of m, 16 mm., and the distance 
of the root-ends resp. 9 and 7,5 mm.; this distance is about 10 mm. 
in m,. In these respects, and in the vertical depth of the pulp- 
cavities, which is 15 mm. in m,, 25 mm. in m,, the fossil form 
of Java again resembles the Australians, and differs from Homo 
neandertalensis (and heidelbergensis). 
The folding of the enamel (crenation) is more composite than in 
Kuropeans, but not to a higher degree than is also found in Australians. 
The two premolars in the lower jaw of Wadjak II are not larger 
and not more primitive of form than in the fossil mandibles already 
known and those of the living races of Man. The crowns of the 
(loose) incisors and canine, like those of the first premolar, are 
larger, of the second premolar and of the molars on the other hand 
smaller than in Homo heidelbergensis. The joint length of the two 
back molars in the latter is 25 mm., in Wadjak II 24 mm., the 
distance from the incision to the back margin of m, being 42 mm. 
in Homo heidelbergensis and 47 mm. in Wadjak II. The length of 
the dental arch was 58 mm. in the Heidelberg Man, and probably 
60 mm. in Wadjak IL. In the Wadjak Man the front part, in Homo 
heidelbergensis the back part of the dental series was larger. In the 
latter the molars are all three five-cusped, and the crown of the 
middle molar is the largest. In Wadjak II, on the contrary, only 
the front molar is five-cusped; this is also the largest, the second 
and third molars are four-cusped, and comparatively considerably 
smaller; the middle one is the smallest. In the fragment that is 
extant of the lower jaw of Wadjak I (the right back half of the 
corpus mandibulae and the lower part of the ramus with the 
angulus, in which the complete mm, and m,, besides the greater 
(back) part of m,, with much less worn crowns than in Wadjak II), 
m, has three buccal and two lingual cusps; this tooth-crown is also 
