228 BULLETIN OF THE 
The radula consists of a series of strongly hooked, dark amber teeth, the 
lateral ones with broad curved bases and the marginal ones with simple straight 
bases, arranged in rows of five or seven an each side of the minute median 
tooth. In small specimens these hooks are distinctly roughened on the under 
surface by fine, raised, longitudinal lines. The three plates of the gizzard are 
club-shaped, with a yellow-white flattened exterior surface and a dark red- 
dish brown convex interior surface, the greatest convexity situated beyond the 
middle, in the broader end, with a little flattened space in front defined by 
a lighter shade of color. 
Diaphana (?) Lotte, sp. nov. 
Plate II. Figs. 8 and 9. 
One dead specimen, Station 329, off Cape Lookout, N. C., in 603 fathoms. 
Shell rather large, short and stout, abruptly tapered at the ends, truncate at 
the top with the two whorls of the spire showing in a shallow pit; translucent, 
yellowish white, with a slightly lustrous surface covered with distinct punctate 
spiral lines. The outer lip rises considerably above the level of the body whorl, 
arches well forward, and follows the curvature of the body whorl to near the 
base, where it is a little expanded, and joins the columella in a broad curve. 
The inner lip is formed by a rather wide, closely adhering layer of enamel, 
which is considerably thickened on the columella, spreading out over the um- 
bilical region with a thick, free outer edge. The spiral lines are distinct and 
rather coarsely punctate, a little crowded on the apex of the shell, nearly uni- 
formly separated to just below the centre (five to the millimeter), where there 
are two quite fine, widely separated ones, below which they become again 
coarser and considerably crowded on the base. Epidermis thin, very slightly 
tinged with yellow. Lines of growth inconspicuous. 
Length of shell, 8 mm.; breadth, 5.5 mm.;-length of aperture, 8.5 mm. 
A smaller, somewhat worn specimen (No. 45,604), differing from the above 
only in having fewer spiral lines, was dredged by the U. S. F. C. in 1882, at 
Station 1142, off Martha’s Vineyard, in 322 fathoms. 
This species bears considerable resemblance to Cylichna occulta Migh. & Ad.; 
but that is a much smaller and more slender species, more gradually tapered 
toward the ends, with finer and more numerous spiral lines. 
This species is named in honor of Miss Charlotte E. Bush, who has ren- 
dered valuable assistance in assorting and tabulating the specimens in this 
collection. 
