PLATE V. 



Fig. 1. Traclwdon (Pleropeli/x) marginatum, Lambe, right maxillary bone, external view ; reduced one- 

 half. Page 74. 



Fig. 2. The same, internal view. 

 Fig. 3. The same, superior view. 



a, facet for jugal ; h, facet for palatine. 



