BY C. W. DE VIS. 
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wide, joined by a rib to the lobe and separated from it posteriorly 
by a deep excavation. In a much worn tooth the basal rim may 
be almost entire and the diameters 125 : 76. 
Molars. — (PL xvn. fig. 10): Fore link obsolete or nearly so, and 
mid link weak; lobes but slightly convex anteriorly. The base of 
the posterior concavity of m. 4 is enclosed by the descending inner 
edge; an adpressed fold is therefore seen on the hinder surface of 
the anterior molars. The difference between the widths of the 
lobes of m. 4 is greater than in the lower tooth; their ratio is 13*5 
to 12-5. 
Examples — three hundred and twenty-nine. 
Mandibular. — Of adults : Thirty-four rami with all the cheek- 
teeth, most of them with the incisor in place — One hundred and 
fifty-three rami or parts thereof with fewer than all the cheek- 
teeth. 
Of young : Twenty-four rami with p. 3 and some of the follow- 
ing teeth — Sixteen rami without p. 3 . 
Maxillary. — Of adults : Seventeen maxillte with all the cheek- 
teeth, five of them being each a part of a cranium more or less 
entire — Seventy-six maxillse or parts thereof with teeth in greater 
or less number. 
Of young : Nine maxilla* with various teeth. 
Halmaturus dry as, n.s. 
Molars with the upper fore link well developed. Upper pre- 
molar with a narrow ledge tubercular, but not transversely ribbed. 
Lower premolars, both permanent and deciduous, like those of 
H. anak. Size inferior. 
Dimensions. 
Type maxillary. 
Maxillary. — In adults : The length of the entire series of cheek- 
teeth is 54*9 (1); of the first four 46*2 (1); of the true molar 
series 47*5 (1); of the first three 29 - 6 (1); of the premolar from 
11-5 to 15-0 (3). The width of m. 3 is from 9-9 to 10-3 (5). 
Mandibidar. — In adults : The full series of cheek-teeth ranges 
from 52-7 to 58*5 (3); the first four are 35-5 (1); the first three 
