A large series of rami of lower jaws of species of Trachodun were collected in the 

 Red Deer river district. Unfortunately in most of the specimens the teeth are missing, 

 making their specific identification somewhat conjectural. In fig. 24, three of the rami 

 are figured to show size and form. 



Fig. 24. Right mantUbular rami of species of Trachodon from Red Deer river, A, ramus of lower jaw of T. -lelntyni ; 

 B and C, rami probably referable to T. manjinalus. d, alveolar grooves from which the teeth liave fallen ; e, coronoid 

 process ; a, symphyseal surface. One-sixth the natural size. 



