300 



HORTH-CAROLIN'A GEOLOGICAL SURVEY. 



FAMILY ANATINIDAE. PANOPEA REFLEX A. (Fig. 229.) 



Shell large, thin, oblong, ovate ; wrinkled and margin gap- 

 ing widely and reflected. Common in the shell marl of 

 Edgecombe county. 



FIG. 229. 



PHOLADOMYA ABRTJPTA. (Fig. 231.) 



Shell oblong, oval, substance nacreous; surface ornament- 

 ed with from three to five radiating ridges. This beautiful 

 bivalve is quite common in a marl bed in Edgecombe county 

 but rarely entire. 



FIG. 231. 



