NORTH-CAKOLINA GEOLOGICAL SURVEY. 



299 



anterior margin rounded ; posterior elongated or wedge form. 

 Rather common in the shell marl beds of Cape Fear. 



FIG. 227a. 



FIG. 226a. 



FAMILY SOLENIDAE. SOLEN ENSIS. 



(Fig. 227a.) 



This common shell of the coast is sword 

 shaped, with the anterior and posterior 

 margins truncate. 



SOLECURTIS SUBTEKES. CON. (Fig. 228.) 



Shell rather small, thin, somewhat sword 

 shaped; anterior and posterior margins 

 rounded, ventral margin concave, or 

 arched. 



FIG. 228. 



p. CAKIBOETTS. (Fig. 228a.) 

 Is common in the miocene, but the 

 FIG. 228a. valves are rarely en- 



tire. I should, how- 

 ever, express some 

 doubt respecting the 

 identity of the speci- 

 men figured with this 

 species. 



