Bulletin 27 132 



Nassa smithiana, n. sp., Plate 1, Fig. 2 



Shell small, solid, elongate, with heavy straight ribs and 

 spiral bands ; nuclear whorls 2 — 3, small, smooth ; post-nuc- 

 lear whorls flattened ; ribs heavy and straight, occasionally 

 one is developed which is more prominent than the others and 

 may represent a resting stage ; ribs on the body- whorl about 

 10; spiral sculpture consisting of bands, produced by incised 

 lines cutting both the ribs and the interspaces, these spiral 

 bands, on the body- whorl, number about 11 and are regular and 

 large, except the two uppermost, which are smaller; whorls of 

 the spire with 6 or 7 spiral bands ; a deep smooth sulcus cuts 

 into the base of the body-whorl ; suture distinct, bordered either 

 by a smooth area or by small spirals ; mouth small, rounded 

 or ovate, angulated above ; outer lip heavy, denticulate within, 

 columella with a callus, denticulate ; siphonal fasciole strong. 

 Length 14., breadth 6, body-zvhorl 7 mm. 



A very distinctive species, characterized by its elongate 

 shape, heavy ribs and even spiral bands. The species is fairly 

 abundant at Natural Well. 



Named for Ernest R. Smith, a member of the 1st and 2nd 

 Ecphora trips. 



Duplin formation ; Nahiral Well, N. C. 



Nassa gastrophita, n. sp., Plate 1, Fig. 1 



Shell large, with squarish whorls and oblique riblets cross- 

 ed by few coarse spirals ; whorls 5, with slightly convex out- 

 lines, angulated above near the suture ; body-whorl with 4 ob- 

 lique, narrow riblets, separated by wide interspaces ; riblets ex- 

 tending from the suture onto the base ; the body-whorl with 

 9 raised, subequal, spiral bands crossing both the riblets and in- 

 terspaces but do not noticeably nodulate the riblets ; on the 

 penultimate whorl there are 5 spirals ; both the riblets and the 

 spirals are crossed by fine lines which are oblique near the su- 



