428 A, EF. Verrill—Mollusca of the New England Coast. 
and has a large, obtuse, rounded spiral fold above the middle. 
There is also a slight, rounded angle, formed by the junction of the 
columella with the lip in front. 
Length of the seven lower whorls, 18™"; greatest breadth, 6™™; 
length,of body-whorl in front, 75"™"; length of aperture, 4°5™™; its 
breadth, 2°5"™. All the upper whorls are broken off. 
Station 2228, in 1582 fathoms, one dead specimen (No. 44,791). 
This species most resembles 7. Rathbuni, but it is larger, with 
more flattened whorls, and has a distinct fold on the columella. 
Actzeon hebes Verrill, sp. nov. 
PuaTE XLIV, FIGURE 15. 
Shell not very small, short, stout and swollen, broad-ovate in form, 
with a short spire, (the apex is eroded in both our specimens). The 
body-whorl is large, swollen, and constitutes the greater part of the 
shell. The suture is deeply impressed or slightly channeled, the 
whorl just below it rising abruptly with a convex outline. The pen- 
ultimate whorl is short, convex, and is surrounded by about three or 
four punctate grooves. The body-whorl is strongly convex, but 
very slightly flattened in the middle, its upper portion decidedly 
swollen; it is covered by about twenty well-marked, revolving 
grooves, which are closely and very distinctly punctate, the puncta- 
tions arranged very close together or in contact, and nearly uniform 
in size; the intervals between the grooves are rather broad and even, 
with a somewhat lustrous, nearly smooth surface, crossed by slightly 
sinuous lines of growth. The aperture is ear-shaped, rather broad, 
narrowed and rounded at the posterior angles, broadly rounded in 
front, with the inner margin sinuous and strongly excavated at the 
base of the columella, on which there is an oblique, slightly elevated, 
obtuse fold. Our specimens, both of which are dead, are white. 
Length of the largest specimen, consisting only of the last two 
whorls, 8"; breadth, 6°5™™; length of the last whorl, 7°5"™"; length 
of aperture, 6°2™; its breadth, 3™™. 
Station 2224, in 2,574 fathoms. (No. 44,656.) 
Cylichna eburnea Verrill, sp. nov. 
PLATE XLIV, FIGURE 14. 
Shell moderately large for the genus, firm, solid and thick for a 
shell of this group. The shell is somewhat elongated, broadest im 
