100 
FOSSIL JAWS OF MACROPOI)ID.K, 
P. 4 with no large intero-posterior cusp. 
Molar crests rectilinear, with sharp angles and 
feeble links vishnu 
Molar crests curvilinear, with rounded angles 
and strong links cooperi 
N.B. — As the lower jaw of H. minor, Ow., is unknown, its 
place in the above scheme remains to be ascertained. 
Halmaturus vincbus, n.s. 
Upper molars with a group of tapering folds in relief on the 
extero -posterior face of each lobe, with the fore link nearly or 
quite obsolete and the mid link feeble. Lower molars with a 
vertical plate and folds in relief on the intero-anterior face of the 
lobes and with a posterior basal protuberance which is sometimes 
a distinct talon. Upper premolar broadly ledged posteriorly, 
narrowly in front. Lower premolar cuneiform in front much 
dilated intero-posteriorly, J -shaped. 
Dimensions. 
Mandibular. — In adults the entire series of cheek-teeth ranges 
in length from 58 to 64-1 (5); the first four 45-3 (1); the first 
three from 29*5 to 31-8; the first two 20-6 (1). The premolar 
from 11-0 to 15-6 (8); the last four molars from 48-5 to 49*4 (3); 
the last three from 34-0 to 38-0 (3); the last two from 25-5 to 
29-8 (3); m. 4 from 13-1 to 14-5 (2); m. 1 , m. 2 , m. 3 from 26'2 to 
34-0 (3); m. 1 , m. 2 23-2 (1); m. 1 from 10 7 to 11-2 (2); m. 2 from 
12-4 to 13-1 (3); m. 2 , m. 3 from 23-7 to 25-6. The width of m. 3 
is from 9-8 to 13-0 (31). 
In young, p. 3 , m. 1 , m. 2 , m. 3 measure from 38 # 0 to 42'0: mp. 4 , 
m. 1 , m. 2 from 32-5 to 33-0; m. 3 from 13-0 to 15-5 (5). 
The anterior depth of the mandible varies from 22*5 to 32*6 (13); 
the posterior from 21*0 to 32*4 (17); the thickness from 15*1 to 
25-0 (23). 
Maxillary. — The length of the full series of cheek-teeth is from 
60-0 to 64-2 (3); of the first three 37'5 (1); of the true molars 
47*5 (1); of the last three molars from 31*9 to 37*0. 
