PLATE II. 



Adocus variolosus, Cope, (sp.) 



Fig. 1. Plastron, lower or outer surface of specimens represented in figures 4 and 5, page 39 ; one-third 

 natural size. Page 39. 



Fig. 2. The same, upper or inner surface. 



Fig. 3. The lower surface at the anterior end of the same plastron, natural size ; to show the character 

 of the sculpture. 



