ART. 18 SMALL SHELLS DREDGED BY "ALBATEOSS '^ DALL 23 



fold. Height, 2.25; diameter, 1.5 mm. U. S. Nat. Mus. Cat. No. 

 107924. 



Off Fernandina, one immature specimen. 



Owing to the immaturity of the specimen, the identification is 

 tentative. 



Genus CYLICHNA Loven 



Section CYLICHNINA Monterosato 



CYLICHNA VERRILLH Dall 



Cylichna verrillii Dall, Bull. Mus. Comp. Zool., vol. 18, p. 54, 1889. 



Shell small, slender, translucent white, the aperture as long as the 

 shell, smooth except for faint incremental lines; apex with a shallow 

 funicular pit, the whorls involved; shape nearly cylindrical; outer 

 lip thin, straight, the posterior commissure receding about half a 

 whorl; aperture very narrow except at the anterior end, where it 

 rounds evenly into a very short slightly thickened unfolded pillar; 

 body with hardly a wash of enamel or none; base imperforate. 

 Height 6.5; diameter, 3 mm. U. S. Nat. Mus. Cat. No. 107926. 



Off Georgia and Fernandina,^ numerous specimens. Also off the 

 coast of North Carolina in 50 to 124 fathoms, temperatures 58° 

 to 75° F. 



Subgenus Pyrunculus Pilsbry 



PYRUNCULUS FLORIDENSIS, new species 



Shell small, white, smooth, polished, the whorls involved, about 

 four in number, the apex with a wide funicular perforation ; sculp- 

 ture only of faint incremental lines most prominent on the sides of 

 the funicle; aperture as long as the shell, very narrow behind; outer 

 lip in the adult nearly straight, broadly rounded in front, thickened 

 on the pillar, which has a conspicuous fold not present in the young; 

 there is a very minute chink behind the pillar lip. Height, 5.5; 

 diameter at apex, 2.5; maximum diameter, 3.7 mm. U. S. Nat. Mus. 

 Cat. No. 107929. 



Off Fernandina, numerous specimens. 



The larger size, greater rotundity, wider apical opening, and prob- 

 ably the conspicuous fold on the adult pillar, distinguish this from 

 the other species of the locality. 



PYRUNCULUS RUSHI, new species 



Shell small, white, polished, subpyriform, the whorls involved, the 

 apex with a deep narrow perforation; the only sculpture consists of 

 inconspicuous incremental lines; the aperture is as long as the shell, 

 the posterior commissure rounded over, the outer lip thin, nearly 

 straight, broadly rounded in front; a slight bulge, not a fold, fre- 

 quently noticeable where it units with the pillar; a very narrow chink 



