PLATE 65 



Fig. 1. Rhadimchlhys jicvonicus? (Clarke). Right maxilla, outer view, show- 

 ing nearly entire outline and the surface ornamentation. X 4. E 2565, p. 185. 

 Cle\-eland shale; Ohio. 



Fig. 2. Rhadinic lliys dcvonkus (Clarke). Right maxilla, in outer view; from 

 the Portage shale, near Buffalo, N. Y., for comparison with the preceding from the 

 Cleveland shale. X 4. E 2c66, p. 185. 



Fig. 3. Rhadinichtbys dedonicus? (Clarke). Mandibles, separated from each 

 other and both displa\-ing the outer, ornamented surface. X 4. E 2566, p. 185. 

 Cleveland shale; Ohio. 



328 



