112 
FOSSIL JAWS OF MACROPODID.V, 
Molars. — (PI. xvn. fig. 17). From the intero-anterior angle of 
each lobe a low fold descends obliquely to or towards the middle 
of the anterior base of the lobe, and on the triangular face of the 
lobe lies a small ascending fold similar to those in .Sthenurus. 
Previous knowledge of these folds is required for the recognition 
of traces of them left in the aging mandible. The basal talon is 
a distinct ledge-like protuberance. 
Examples — six or eight. 
An adolescent right ramus with the first four cheek-teeth, the 
type — A right aging ramus with all the cheek-teeth — P. 4 in a 
fragment of a right adolescent ramus — M. 4 in a portion of an aged 
left ramus — Part of an adult left ramus with m. 1 , m. 2 — And a 
portion of a young left ramus with m. 2 . To these may be added 
two maxillary fossils which perchance belong to the species. 
Halmaturus indra, n.s. 
Molars with crests moderately curved, angles subrotund, and 
links feeble. The lower permanent premolar subtriangular, with 
a large intero-posterior cusp; the deciduous short, broad, convex 
exteriorly. Molars smooth, without posterior groove or distinct 
talon. 
Dimensions. 
Mandibular. — Young: P.* 5 , mp. 4 m. 3 measure 23*1; p. 3 6 '4; 
p. 4 immature 7 - 7. 
The long dimension of the teeth is the same as in H. cooperi. 
Form. 
Mandibular. — P. 4 (extracted) (PI. xvn. fig. 19), subtriangular, 
with a large intero-posterior cusp, separated from the posterior 
surface of the lobe by a broad vertical groove. Outer surface of 
crown impressed and bearing a low broad mesial rib; anterior end 
of crown with a horizontal groove between base and lobe. Crest 
central, not curving inwards posteriorly. 
P. 3 (PI. xvn. fig. IS) short, broad, basal outline biconvex, 
diameters 6*4 x 4-5. Crest towards the inner and flatter side. 
