BY C. W. DE VIS. 97 



m"^, m.* 30'G: ;ui(l in.'"' l')-;!. Tlip width of m.'" is from 12-3 to 

 13-9 (5). 



In dimensions of length this si:)ecies does not much exceed S. 

 atlas, but the thickness of the mandible due to its external con- 

 vexity, which commences at tho 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. yoliah 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; t3'-pe — 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. ^, m.-, m."'; adult; tooth-sculpture much abraded; 

 vascular foramen large (8830) — Portion of a right ramus with 

 m.'^ and part of m. -; adolescent (8842); tooth-sculpture very 

 distinct; vascular foramen large. 



Maxill'iry. — Portion of a right maxilla with the first three 

 molars; tooth-sculpture well marked (10262) — Portion of a left 

 maxilla with m.'% m.^ (8055); adult; sculpture abraded — Portion 

 of a right maxilla with m. -, m.' (8046); sculpture almost 

 obliterated — Fragment of a right maxilla with m.-^ (8069); adult; 

 sculpture distinct — Portion of a left maxilla with the premolar 

 and m.^, m.- all in fine condition, and exactly fitting the mandible 

 11204. 



Sthenurus atlas, Owen; Owen, XXII. ii. p. 359. 



Macrojnis atlas, Owen (I.e.). 



Protcmnodon anak, Owen, parfi/n: 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 



