ART. 10 CEETACEOUS rAUNAS OF THE CAEOLINAS STEPHENSON 21 



Locality. — From Mars Bluff on Peedee Kiver, 3 miles below the 

 Atlantic Coast Line Eailway bridge, Florence County, S. C. Col- 

 lected by C. W. Cooke and L. W. Stephenson in 1922. 



Geologic position. — Upper Cretaceous, Snow Hill marl member 

 of Black Creek formation, upper part of Exogyra fonderosa zone. 

 European equivalent, upper Senonian (Campanian). 



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

 tional Museum. Holotype, Cat. No. 73440; paratype, Cat. No. 

 73441. 



TURRITELLA SUBTILIS, new species 



Plate 9, figs. 6, 7 



Description. — Spire high with probably not less than 20 whorls, 

 apical angle apparently about 20°. The diameter of the largest 

 whorl preserved is approximately 21 mm. Sides of whorls very 

 slightly convex, practically flat on one well preserved specimen, 

 ornamented with 28 or 30 fine revolving threads of irregular strength, 

 strongest on the middle and anterior parts of the whorls; in places 

 the threads are faintly nodose. Suture sharply, but not deeply im- 

 pressed. There is a faint indication of growth lines which appear to 

 be strongly convex backward on the whorls. The other features of 

 the shell are not preserved. 



Remarks. — This species is larger and is much more finely orna- 

 mented than Turritella pointensis Stephenson, from the old French 

 Brothers' quarries, 3 miles east of Rocky Point station. Turritella 

 lorillarden^is Weller from the stratigraphically lower Woodbury 

 clay of New Jersey appears to be a rather closely related species, but 

 its ornamentation is coarser, the sutural depression is deeper, and the 

 whorls are a little more convex. 



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

 of Rocky Point station, Pender County, N. C. Collected by L. B. 

 Kellum in 1923. 



Also from the old Rocky Point quarries at Lanes Ferry, 3 miles 

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



Geologic position. — ^Upper Cretaceous, upper j^art of Peedee for- 

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

 upper Senonian (Maestrichtian). 



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

 Museum, and includes the holotype, Cat. No. 73443, and several para- 

 types. Cat. Nos. 73444, 73445. 



