PLATE XVI. 



Fig. 1. — Trioni/i srutamantiqum. Type, oue-fourth natural size. Page IIG. 

 Fig. 2. — Extremities of right byo ami hypo-sternal bones of the same speoimeu. 

 Fig. 3. — Trianyx helerofjlyptM Cope. Type, one-fourth natural size. Page 120. 



Figs. 3-6. — Trimiyx concfniricus Cope. Costal bones, natural size. Page 120. The restoration in this 

 figure is erroneous, as the costal bones should be more mimerons. 



