Dominican Fossils — Maury 97 



tirely smooth within; inner lip with a posterior dentate callosity, 

 and a thin plate of callus on the columella through which the 

 spiral striations are seen; aperture wide, elliptical. Length 13, 

 width 7 mm. 



This species is named in honor of Miss Nannie Belle Maury 

 of Washington, D. C. 



Localities. — (Exp'd '16) Sandy clays, Zones H and I, Rio 

 Cano at Caimito. (Abundant and characteristic.) 



Strombina cyphonotus Pilsbry and Johnson 



Plate 15, Figures 7, 8 



Strombina gradata Gabb (in part), Trans. Amer. Phil. Soc,. vol. 15, 

 p. 221, 1873. Not Columbella gradata Guppy, Quart. Jour. 

 Geol. Soc. London, vol 22, p. 288, pi. 16, fig. 10, 1866. 



Strombina Gabbiana Newcomb, Manuscript. Specimens Cornell Uni- 

 versity Museum, No. 19750 Newcomb Collection. 



Strombina cyphonotus Pilsbry and Johnson, Proc. Acad. Nat. Sci. 

 Phila., p. 353, pi. 25, figs. 6, 7, 1911. 



Nearly half a century ago Dr. Newcomb noted that this 

 species was not identical with Guppy's Jamaican S. gradata, 

 and gave the manuscript name .S. Gabbiana (Newcomb Collec- 

 tion No. 19750). In late years Johnson and Pilsbry named the 

 Dominican shell 5 1 . cyphonotus. 



Strombina prisma Pilsbry and Johnson 

 Plate 15, Figures 9, 10 



Strombina gradata Gabb (in part), Trans. Amer. Phil. Soc, vol. 15, 

 p. 221, 1843. Not Columbella gradata Guppy, Quart. Jour. 

 Geol. Soc. London, vol. 22, p. 288, pi. 16, fig. io, 1866. 



Strombina prisma Pilsbry and Johnson. Proc. Acad. Nat. Sci. Phila., 

 PP- 352, 353. Pi- 15, figs. 9, 10, 191 1. 



The closest allies of S. prisma are S. cyphonotus and the 

 Gatun analogue, 5. Lessepsiana Brown and Pilsbry. S. cancel- 

 lata Sowerby, living at Panama, has the same triangular last 

 whorl, and an extremely prominent dorsal hump, but the whorls 

 are carinated and coronated. 



