310 



NORTH-CAROLINA GEOLOGICAL SURVEY. 



AMrHIDETUS VIRGINIANU8.* FORBES. (Fig. 245.) 



&quot;Body broadly ovate, elevated and truncate posteriorly : 

 back oblique ; dorsal impression lanceolate ; scutab area very 

 slightly excavated ; ambulacral spaces broad, triangular, de 

 pressed ; interambulacral spaces slightly convex ; anteal fur 

 row broad and shallow, sides slightly gibbous ; sub-anal im 

 pressions broadly ob-cordate ; post-oral spinous space broadly 

 lanceolate. Edw. Forbes.&quot; 



FIG. 245. 



a, lower area ; &, upper area ; c, posterior area, showing 

 the relation of the sub-anal impression. Usually found in 

 fragments in the miocene of North-Carolina. 



Journal of the Geological Society, Yol, 1, p. 425, 



