ART. 18 SMALL SHELLS DREDGED BY ''aLBATEOSS" DALL 119 



LITIOPA BASISTRIATA, new species 



Shell (originally pale brown?) white or translucent as dredged, 

 brilliantly polished, with a minute brown, reticulate, subcylindrical 

 nucleus of two or three whorls and about four subsequent rather 

 rapidly enlarging whorls; base with 10 or more sharply cut striae 

 with much wider interspaces; aperture rather narrowly ovate, the 

 outer lip thin, the pillar shorter than the apertm'e with a prominently 

 reflected anterior edge; the body with a thin wash of callus. Height, 

 5.7 mm.; diameter, 2.3 mm. U. S. Nat. Mus. Cat. No. 108406. 



Off Georgia, abundant. 



The spiral striae rarely reach the periphery. 



Genus ALABA A. Adams 



ALABA CONOIDEA Dall 



Alaha conoidea Dall, Proc. U. S. Nat. Mus., vol. 12, p. 336, 1889. 



Off Georgia and Fernandina, abundant. Also on the Campeche 

 Bank, in 200 fathoms, Dr. W. H. Rush; and off Cape Hatteras, in 63 

 fathoms. 



Genus POLINICES Montfort 



POLINICES NANA Moller 



Natica nana Moller, Kroyer's Natur. Tidsk., vol. 4, p. 80, 1842. 



Lunatia nana Verkill, Trans. Conn. Acad. Sci., vol. 5, p. 516, pi. 42, fig. 9, 



1882. 



A dozen specimens off Fernandina. The species ranges north to 

 Greenland. 



POLINICES LEPTALEA Watson 



Natica leplalea Watson, Journ. Linn. Soc. London, vol. 15 (Zoology), p. 261, 

 1880; Challenger Gastr., p. 441, pi. 27, fig. 7, 1889. 



Numerous specimens off Fernandina. Off Sombrero Island in 450 

 fathoms; Watson. 



NATICA (CRYPTONATICA) PUSILLA Say 



Natica pusilla Say, Journ. Acad. Nat. Sci. Phila., vol. 2, p. 257, 1822. — Tryon, 

 Marine Moll. Atlantic Coast, p. 58, fig. 95, 1873. 



One fresh specimen was obtained off Georgia. 



LAMELLAKIA FERNANDINIAE, new species 



Shell very small, naticoid, translucent white, of two and one-half 

 whorls; suture pronounced, not channeled; sculpture of incremental 

 lines, occasionally strongly impressed; aperture large, the pillar 

 retractively arcuate, not reflected; axis imperforate. Height, 3 mm.; 

 diameter 3.2 mm. U. S. Nat. Mus. Cat. No. 108110. 



One living specimen off Fernandina. 



This is much more naticoid in form than L. pellucida Verrill, and 

 much smaller than L. rangi Bergh. 



