526 



Dll. A. f^MITII WOODWARD ON A 



thii'il, is represented only by its double-rooted base. The third 

 and second molars closely resemble those of the opossums, each 

 consisting of a much-raised tricuspid anterior portion (trigonid) 



Text- figure 1. 



.rx 



A. 



m.4. 771.3. 



m.2. m.l. pm.4. pm3. pm. I. 



c. 



Cimolestes cutleri; imperfect right mandibular ramus, outer (A), upper (B), and 

 inner (C) aspects, twice nat. size. — Upper Cretaceous (Belly River Series) : 

 Sand Creek, Red Deer River, Alberta, Canada. 



m., mental foramen ; s., symphysial facette ; m. 1-4, molars ; pm. 1, 3, 4, 

 premolars ; c, socket for canine. 



with a less i"aised but extended posterior heel (talonid). The 

 third molar (in. 3) is implanted by two very stout roots, of which 

 the posterior is the larger. The relatively large outer cusp 



