PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 375 
4vhe 
as a thin layer of enamel. Umbilicus a small but distinet chink. 
Length, 2.75""; breadth, 1.80". Animal unknown. 
Dredged by us off Massachusetts Bay, 1877, station 34, in 160 fathoms : 
and off Newport, at stations 892 and 894, in 487 and 365 fathoms. 
Cingula turgida (Jeff.) Verrill. 
tissoa turgida Jeftreys.—G. O. Sars, Moll. Reg. Arct. Norv., p. 183, pl.10, figs. 
12 a, b. 
A very small, white species, with smooth, rounded whorls and distinct 
umbilicus. Station 892, in 487 fathoms. 
Cingula Jan-Mayeni (Friele) Verrill. 
Rtissoa Jan-Mayeni Friele, Nyt. Mag. Natury., 1877 (auth. cop., p. 4, fig. 4). 
Cingula Jan-Mayeni Verrill, Amer. Journ. Sci., xvii, p. 311, Apr., 1879. 
This species was common at stations 891 to 894, in 238 to 500 fathoms. 
A single specimen occurred at station 880. It was originally from off 
Greenland, 70 to 300 fathoms. Whiteaves has dredged it in the Gulf of 
Saint Lawrence, 200 fathoms, but it had not hitherto been taken on the 
New England coast. 
Lepetella Verrill. 
Amer, Journ. Sci., xx, p. 396, Nov., 1880. 
Shell small, smooth, oval or oblong, limpet-shaped, conical, with a 
simple subcentral apex, not spiral. Animal much as in Lepeta, but with 
distinct eyes. Odontophore tenioglossate, with seven regular rows of 
teeth ; median tooth a rather broad, thin plate, with incurved, smooth, 
convex edge, narrower than the base; inner lateral tooth stout, with a 
broad base and a single incurved, terminal denticle; second lateral 
tooth larger, with a broader flat base and two terminal incurved denti- 
cles; outer laterals smaller, flattened, subtriangular plates. 
Lepetella tubicola Verrill & Smith. 
Loe. cit., p. 396, 1880. 
Shell thin, white, smooth, conical, with the apex acute and nearly 
central; aperture broad-elliptical, oblong, or subcircular, usually more 
or less warped, owing to its habitat; edge thin and simple. Sculpture 
none, lines of growth slight, outer surface dull white; inner surface 
smooth, with the pallial markings faint. Length of largest specimens, 
3.75"; breadth, 3"™"; height,2"". On inside of old tubes of Hyalinecia 
artifer V.; twenty-seven were taken from one tube. Stations 869, 192 
fathoms, and 894, 365 fathoms. 
Lovenella Whiteavesii Verrill, loc. cit., p. 396, 1880. 
Cerithiopsis costulatus Whiteaves (non Moller). 
A small and elegant species, allied to L. metula (Lovén). Elongated, 
subulate; spire regularly tapering to the acute apex; whorls nine, 
slightly convex, with a prominent, nodulous, revolving carina below the 
middle, and a smaller one just below the suture; on the body-whorl 
another less elevated and scarcely nodose carina revolves in line with 
