BY C. W. DE VIS. 
97 
m 3 , m. 4 30-6; and m. 3 15*5. The width of m. 3 is from 12-3 to 
13-9 (5). 
In dimensions of length this species does not much exceed S. 
atlas, but the thickness of the mandible due to its external con- 
vexity, which commences at the incisive outlet, combines with its 
symphysial anchylosis and the erection of its incisor to connect 
it with the larger species. 
In dental sculpture it is also scarcely to be distinguished from 
S. atlas; yet here again affinity with S. goliah and otuel is shown 
by the incumbent fold which represents the anterior link sending 
a lateral process outwards and downwards. 
-Examples — nine. 
Mandibular. — Associated rami of an adult mandible with all 
the cheek-teeth (11204); vascular foramen large; type — A left 
ramus with all the molars, tooth-sculpture not so well marked as 
in the preceding (8841); adult — Portion of a left ramus with the 
teeth m. 1 , m. 2 , m. 3 ; adult; tooth-sculpture much abraded; 
vascular foramen large (8830) — Portion of a right ramus with 
m. 3 and part of m. 2 ; adolescent (8842); tooth-sculpture very 
distinct; vascular foramen large. 
Maxillary. — Portion of a right maxilla with the first three 
molars; tooth-sculpture well marked (10262) — Portion of a left 
maxilla with m. 3 , m. 4 (8055); adult; sculpture abraded — Portion 
of a right maxilla with m. 2 , m. 3 ^8046); sculpture almost 
obliterated — Fragment of a right maxilla with m. 3 (8069); adult; 
sculpture distinct — Portion of a left maxilla with the premolar 
and m. 1 , m. 2 all in fine condition, and exactly fitting the mandible 
11204. 
Sthenurus atlas, Owen; Owen, XXII. ii. p. 359. 
Macropus atlas, Owen (I.e.). 
Protemnodon anak, Owen, partim: Owen, I. 1874, p. 275. 
Dental sculpture nearly as in the preceding species, but the 
linking fold less distinct in the mid valley. Mandible thin, flat 
G 
