A, FE. Verrill—Mollusea of the New England Coast. 185 
tened and a little effuse anteriorly. Color white, below the brown 
nucleus. 
Height, 2-2"; breadth, 3:6"; breadth of aperture, 2™™. 
A young specimen, preserved in alcohol, and apparently of the 
same species, has a distinct epidermis, bearing small hair-like pro- 
cesses, most prominent on the carine. Its nucleus is somewhat 
smaller than in the specimen described above, but has the same 
form and color. 
Station 2076, N. lat. 41° 13’, W. long. 66° 00’ 50”, in 906 fathoms 
(No. 38,101); station 2084, N. lat. 40° 16’ 50”, W. long. 67° 05’ 15", 
in 1290 fathoms (No. 38,105). The young alcoholic specimen re- 
ferred to is from station 2043, in 1467 fathoms, N. lat. 39° 49’, W. 
long. 68° 28’ 30” (No. 38,104). Albatross, 1883. One specimen 
was taken at each locality. 
Cithna (?) olivacea Verrill, sp. nov. 
PLATE XXIX, FIGURE 5. 
Shell thin, translucent, naticoid, as broad as high, subglobular, 
with about four rapidly expanding, rgunded whorls. Suture distinct, 
scarcely impressed. Surface smooth, glossy, covered with a green- 
ish yellow, thin, closely adherent epidermis. The upper whorls are 
obscured by a thin, smooth, chitinous deposit, which also fills the 
suture; beneath this the nuclear whorls appear to have a delicate 
sculpture, consisting of two or more revolving cinguli crossed by 
delicate lines of growth. Aperture very broad, ovate; the outer lip 
is evenly rounded, forming nearly a semicircle. Columella-lip nearly 
straight, a little excurved in the middle, with the edge everted and 
a little thickened, slightly effuse, and forming a distinct, rounded 
angle and a rudimentary notch, where it joins the oufer lip. The 
inner lip is continued from the columella-margin to the outer lip by 
a very thin smooth deposit of enamel, without a free edge. Spire 
very short, apex obtuse. Umbilicus wanting. 
Length, 4™"; breadth, 4™™; length of aperture, 2°25"; breadth, 
bab ae 
Off Martha’s Vineyard, station 1154, in 193 fathoms, 1882. An 
additional specimen from station 2084, in 1290 fathoms, 1883. 
Both specimens were without the animal, though fresh in appear- 
ance. The affinities of this shell are, therefore, very doubtful. 
