300 



NORTH-CAROLINA GEOLOGICAL SURVEY. 



FAMILY ANATINIDAE. PANOPEA REFLEXA. (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 ABRUPTA. (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. 



