16 PEOCEEDIFGS OP THE NATIOlSrAL MUSEUM vol. 72 



ribs remain finer with increase in size than they do on Gabb's species, 

 and the finding of two relatively small specimens suggests that the 

 species does not attain large proportions. 



Locality. — The holotype is from the new Rocky Point quarries a 

 mile northeast of Eocky Point station, Pender County, N. C. The 

 paratype was found in French Brothers' quarry at old Rocky Point 

 (now Lanes Ferry), 3 miles east of Rocky Point station. 



Geologic position.. — Upper Cretaceous, upper part of Peedee for- 

 mation, upper part of Exogyra costata zone. European equivalent, 

 upper Senonian (Maestrichtian). 



Type TTiaierial. — The material is in the United States National 

 Museum and includes the holotype. Cat. No. 73435, and one paratype 

 Cat. No. 31719. 



VENIELLA (ETEA) GRANDIS, new species 

 Plate 6, figs. 3, 3a, 4 



Description. — Shell large and thick in comparison with other 

 species of the subgenus, elongate subovate in outline, inequilateral, 

 moderately convex. Beaks prominent, incurved, prosogyrate, ap- 

 proximate, situated about one-third the length of the shell from the 

 anterior extremity. Umbonal ridge distinct, extending from the beak 

 to the lower posterior extremity, curved, convex upward, bounded 

 above by a pronounced radiating depression extending from the beak 

 to the posterior truncation. Dimensions of the holotype a right 

 valve : Length, 58 mm. ; height, 42 mm. ; convexity, 14 mm. 



Hinge of right valve with two cardinal teeth separated by a deep 

 triangular socket; the anterior cardinal is short and thin and is di- 

 rected downward and slightly backward; the posterior cardinal is 

 long, thick, oblique, and strongly bifid. The inner anterior lateral 

 tooth is short, thick, and prominent, and is situated close to the 

 anterior cardinal from which it is separated by a deep narrow cleft ; 

 the inner lateral is separated from the weak outer lateral by a deep 

 socket. The inner posterior lateral is partly broken but as shown 

 by a cast, it is rather thick, strong, and relatively long; the outer 

 lateral is weak and is separated from the inner one by a pronounced 

 socket deepest toward its forward end. 



Ligament opisthodetic, set in a narrow deep groove extending in an 

 upbent curve from the beak to the forward end of the lateral socket, 

 a distance of 18 mm. 



Anterior adductor scar broadly subovate, deeply impressed; pos- 

 terior adductor scar obliquely elongate, not so deeply impressed, and 

 a little larger than the anterior. Pallial line simple. Inner surface, 

 as shown on a cast, with two or three broad, rather weak, radiating 

 undulations. 



