106 PROCEEDINGS OF THE NATIONAL MUSEUM vol.70 



whorls and sometimes absent altogether, and more or less obvious 

 incremental lines; spiral sculpture of extremely faint, almost micro- 

 scopic striae over most of the surface; last whorl about half as long 

 as the shell, inflated, and much the largest; base rounded; aperture 

 ovate, peristome continuous, thin, sharp, a chink behind the inner 

 lip. Length of shell, 2.5; diameter, 1.7 mm. U. S. Nat. Mus. Cat. 

 No. 108314. 



Off Georgia, five specimens. 



Some of the specimens have a slightly brownish tint which may be 

 accidental. The species is of a type recalling R. coriacea Manzoni^ 

 of Madeira. 



Section MODULUS Monterosato 



RISSOA (NODULUS) FERNANDINAE, new species 



Shell minute, subconic, white, with a blunt apex and about four 

 and a half moderately rounded whorls; suture distinct, not deep; 

 surface smooth, base evenly rounded with a shallow umbilical dimple; 

 aperture rounded, the margin slightly thickened, the peristome not 

 continuous across the body where it is represented by a thin layer of 

 callus. Length, 1.6; diameter, 1.2 mm. U. S. Nat. Mus. Cat. No. 

 108224. 



Off Fernandina, one specimen. 



The shell recalls R. nitida Brusina, of the Mediterranean. The 

 specimen may be bleached. 



Section CINGULINA Monterosato 



RISSOA (CINGULINA) CURTA, new species 



Shell minute, smooth, turbinate, white, of about three and a half 

 moderately convex whorls; suture distinct, not deep; last whorl much 

 the largest; base rounded, with a deep umbilical dimple; aperture 

 rounded, the peristome thin, sharp, not continuous across the body. 

 Height, 1.2; diameter, 1 mm. U. S. Nat. Mus. Cat. No. 333454. 



Off Fernandina, one specimen. 



It recalls R. triangularis Watson, from Ascension Island in 160 

 fathoms. 



Family CAPULIDAE 



Genus CAPULUS Montfort 



CAPULUS INTORTUS Lamarcic 



Capulus intortus Lamarck, An. S. Vert., vol. 6, pt. 2, p. 18, 1822. — Tryon 

 Man., vol. 8, p. 131, pi. 39, figs. 76-6, 1886. 



Off Fernandina, one specimen. 



