NOKTH-CAKOLINA GEOLOGICAL SURVEY. 



239 



FIG. 69. 



G. LATIDEN8. (Fig. 69.) 



Differs from the preceding in its pro 

 portional length of base, being considera 

 bly greater. 



The crown is low, and the enamel ex 

 tends lower upon the outer face ; the sen- 

 atures subequal ; apex pointed. 



It is much more common than the G. 



pristodontus. 



GENUS LAMNA. 



Teeth rather flat, narrow and elongated ; smooth, and 

 usually furnished with appendages at base. 



LAMNA ELEGANS. AGASS. (FigS. 70, 71 & 71 A.) 



Tooth narrow, lanceolate ; inner face quite convex, outer 

 rather flat and smooth ; the former regularly striate at base. 



FIG. 70. 



FIG. 71 A. 



FIG. 71. 



but towards the middle the striae degenerate into wrinkles ; 

 the outer ones are short, and but reach the edge of the tooth at 

 base. The L. elegans is very common in the miocene beds ot 

 North-Garoltna. Fig. 71 A, side view. 



L. (ODONTASPIS) CONTORTIDENS. 



Specimens which answer to the figures of this species, giver, 

 by Prof. Gibbs, especially in the irregular form and absence 



