NO. 3 THE RELATIONSHIPS OF QUEMISIA GRAVIS — RAY 



Fig. 1. — Right mandibular rami in lingual aspect of (A), Elasmodontomys 

 obliquus, A.M.N.H. 17137h; (B), Quemisia grains, U.S.N.M. 253175 (the type) ; 

 (C), Plagiodontia hylaeum, M.C.Z. 35314. Diagrammatically represented, largely 

 on the basis of X-ray photographs. 1£ x natural size. 



