AET. 10 CKETACEOUS FAUNAS OF THE OABOLIITAS — STEPHENSOE" 13 



lected by L. B. Kellum in 1923 and one by L. W. Stephenson in 1926. 

 Two casts from the old Eocky Point quarries at Lanes Ferry, 3 miles 

 east of Eocky Point station, collected by W. B. Clark in 1889. 



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

 mation, upper part of Exogyra costata zone. European equivalent 

 upper Senonian (Maestrichtian) . 



Type Trmterial. — The material studied is in the United States Na- 

 tional Museum and includes one left valve, the holotype. Cat. No. 



73428, another smaller and better preserved left valve, Cat. No. 



73429, and two internal casts, Cat. No. 73430. 



LIMA INSOLITA, new species 



Plate 5, fig. 10 



Description. — Shell very large, subovate in outline, inequilateral, 

 oblique. Beak and ears not preserved. Approximate dimensions of 

 the type, a right valve : Length, 57 mm. ; height, 60 mm. ; convexity, 

 10+ mm. (?). The specimen appears to have been somewhat flat- 

 tened by mechanical crushing. 



Hinge and internal features not preserved. 



Anterior margin broadly rounded, passing into the more sharply 

 rounded ventral margin; posterior margin sharply rounded below, 

 becoming nearly straight and sloping forward above, probably mak- 

 ing an angle with the hinge line of about 140°. 



The surface of the type is marked with more than 25 radiating 

 ribs, which are narrow and low, and are separated by much wider 

 interspaces, some of which show faint indications of very fine inter- 

 lining; the broadest interspaces between the ribs along the ventral 

 margin of the type are about 3 mm. wide ; on the anterior and poste- 

 rior slopes the ribs become very faint. 



Remarhs. — This is the largest species of Lima yet found in the 

 Upper Cretaceous of the Atlantic and Gulf Coastal Plain. 



Locality. — From the New Eocky Point quarries, a mile northeast 

 of Eocky Point station, Pender County, N. C. Collected by L. W. 

 Stephenson in May, 1926. 



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

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

 upper Senonian (Maestrichtian). 



Type rnateriol. — The holotype is in the United States National 

 Museum, Cat. No. 73431. 



ANOMIA MAJOR, new species 



Plate 5, fig. 11 



Description. — Shell large, moderately thick, subcircular to broadly 

 subovate in outline, ranging in different individuals from flat to 

 strongly convex. Beak small, depressed to moderately prominent, 

 55221—27 ^3 



