66 PKOCEEDINGS OF THE NATIONAL MUSEUM vol. "o 



MELANELLA ARCUATA, C. B. Adams 



Eulima arcuata C. B. Adams, Contr. to Conch., p. 110, 1850 (not of 

 Sowerby, 1866). 



Shell minute, white, solid, the apex minute, blunt, the spire irreg- 

 ularly bent, cliiefly to the right, with seven or eight flattish whorls ; 

 suture obscure, over-glazed; surface polished, without visible sculp- 

 ture; base elongateiy rounded, imperforate; aperture narrow, slightly 

 narrowed in front, margins thin, simple, the outer lip very slightly 

 convexly arcuate. Length of shell, 4; of aperture, 1.5; diameter, 

 1.7 mm. U. S. Nat. Mus. Cat. No. 108029. 



Off Fernandina, numerous specimens. Jamaica, West Indies; 

 Adams. 



MELANELLA OPHIODON, new species 



Shell minute, slender, thin, translucent white, the apex minute, 

 blunt, the spire more or less arcuate, in the type bent to the right, 

 with about 8 whorls; suture visible, appressed, over-glazed; surface 

 polished without visible sculpture; aperture very short, somewhat 

 patulous; base rounded, imperforate, the margin of the aperture thin, 

 simple; the outer lip slightly protractively arcuate. Length of shell, 

 8.5; of aperture, 0.7; diameter, 1 mm. U. S. Nat. Mus. Cat. No 

 108027. 



Off Fernandina, one specimen. 



Not unlike 31. arcuata but proportionately more slender. In the 

 former it is the early part of the spire which is bent; in the present 

 species the whole shell is evenly arcuate. 



MELANELLA ANACHOREA. new species 



Shell minute, smooth, transparent whitish, thin, the apex slightly 

 brownish, minute and blunt, with about 10 whorls, the spire slightly 

 bent backward; suture appressed, glazed over, the whorls flattish; 

 base rounded, imperforate; aperture narrowly sublunate, the outer 

 lip thin, moderately convexly arcuate, inner lip very short, thin, body 

 without enamel. Length of shell, 5; of aperture, 1.2; diameter 1.5 

 mm. U. S. Nat. Mus. Cat. No. 108377. 



Off Georgia, numerous specimens. 



In most Melanellae showing torsion, the spire is bent either to the 

 right or left; in the present one the bending is in the direction oppo- 

 site to the plane of the aperture. 



MELANELLA STAMINAy new species 



Shell small, slender, white, smooth and polished, flat-sided, acute 

 conic, the apex minute and blunt; shell with about seven flattish 

 whorls; suture distinct, closelj'' appressed, not glazed over, with no 

 visible sculpture, last whorl less than half as long as the shell; the 

 spire straight; base elongateiy rounded, imperforate; aperture elon- 



