122 PROCEEDINGS OF THE NATIONAL, MUSEUM tol. 70 



Genus GANESA Jeffreys, 1883 



Subgenus LissosPiRA Bush, 1897 



LISSOSPIRA PROXIMA Tryon 



Cyclostrema proximo Tryon, Manual Conchology, vol. 10, p. 98, pi. 33, fig. 



4, 1888. 

 Lissospira proxima Bush, Trans. Connecticut Acad. Sci., vol. 10, p. 130, 



pi. 22, fig. 3, 1897. 



Four specimens off Fernandina and 13 oflf Georgia. 



In Miss Bush's article she makes an older genus a subgenus of one 

 of her new genera, which is of course unauthorized hj the rules of 

 nomenclature. 



LISSOSPIRA BUSHAE, new species 



Shell resembling L. proxima Tryon, but larger, with a less elevated 

 spire, nearly four white well-rounded, smooth, and polished whorls, 

 a well-marked but not deep suture, a perforate umbilicus with no 

 spiral striations around it, a convex base, the aperture nearly circular, 

 the lips united over the body by a thin layer of enamel, margins thin, 

 entire; the inner lip close to but not reflected over the umbilicus. 

 Height, 3.3 mm.; diameter, 2.7 mm. U. S. Nat. Mus. Cat. No. 108139. 



Two specimens off Fernandina. 



LISSOSPIRA CO NIC A, new species 



Shell small, white, smooth, polished, conic, with a little more than 

 four whorls, moderately rounded, the immature specimens having 

 an angle at the margin of the base on which the suture is laid, but 

 this disappears on the last adult whorl; suture distinct, not deep; base 

 rounded, the aperture rounded, the lips united over the body by a 

 thin wash of enamel; the inner lip in the adult reflected over and 

 nearly closing the small perforate umbilicus, which is not surrounded 

 by any spiral sculpture. Height, 2 mm.; diameter, 1.7 mm. U. S. 

 Nat. Mus. Cat. No. 108107. 



Three specimens off Fernandina. 



The relatively narrow conical form is not shared by any of the 

 species described from the coast. 



LISSOSPIRA DEPRESSA, new species 



Shell small, depressed turbinate, white, smooth, with about three 

 whorls, the last much the largest; whorls well rounded, suture 

 distinct, not deep; base rounded, aperture somewhat oblique, angu- 

 lated above and below, the lips simple, thin, not reflected, united by 

 a layer of enamel over the body; umbilicus perforate, the verge 

 marked by a distinct angle, not surrounded by any spiral sculpture. 

 Height, 1.5 mm.; diameter, 2 mm. U. S. Nat. Mus. Cat. No. 108131. 



Fifteen specimens off Fernandina. 



