PLATE XIX. 



Fig. 1. Myledaphus bipartitus, CoTpe, fSLvement tooth, isice ot crov/n ; eal&Tged iouT times. Page 28. 



Fig. 2. Side view of same tooth. 



g, crown ; /, face of crown ; r, root. 



Fig. 3. Lepidotus occidentalis, Leidy, outer surface of scale ; natural size. Page 29. 



Fif , 4. Monoclonius dawsoni, Lambe, left scapula and coracoid, internal view. (Provisionally associated 

 with M. dawsoni) ; one-fourth natural size. Page 60 



Fig. 5. Monoclonius dawsoni, predentary bone, lateral view. (Provisionally associated with M. dawsoni); 

 natural size. Page 63. 



Fig. 6. The same, viewed from above. 



s, scapula ; c, coracoid ; a, suture between scapula and coracoid ; g, glenoid cavity ; b, upper 

 border ; d, anterior end ; e, groove for dentary. 



