210 A. E. Verrilli— Mollusca of the New England Coast. 
their own length. The spiral lines are unequal in fineness, the 
broader ones alternating with finer ones in which the dots are very 
narrow ; the intervals between the spiral lines are also variable in 
breadth. None of the specimens appear to have a distinct epidermis. 
Length of shell to apex of one of the largest specimens, 35™™ ; 
breadth, 25°"; length of aperture, 37™"; greatest breadth of aper- 
cure, See 
Off Martha’s Vineyard, at stations 2052, in 1098 fathoms; 2074, in 
1309 fathoms; 2076, in 906 fathoms; 2077, in 1255 fathoms; off 
Delaware Bay, stations 2102, in 1209 fathoms; and 2103, in 1091 
fathoms (No. 35,374). It was most common at station 2102, N. lat. 
38° 44’, W. long. 72° 38’, in 1209 fathoms, where thirteen specimens 
were taken, ten of them living (No. 35,641). 
This species bears some resemblance to S. punctostriatus (Migh.) 
H. and A. Ad., but is much thinner, with a far more delicate texture. 
Its form is much shorter and more swollen in the middle, and the 
spiral lines are less numerous, with wider intervals, and have the 
punctations larger and not so close together, giving a much smoother 
appearance to the surface, although the punctate character is quite 
as evident. The aperture is also much broader, especially in its 
anterior half, while the body-whorl projects into it much more 
strongly. The inner lip is much thinner and shows only a slightly 
thickened fold along the columella-margin. Posteriorly the shell is 
not at all narrowed, but is evenly rounded instead of being pinched 
up as in S. punctostriatus. ‘The posterior process of the outer lip is 
more flaring, and extends farther backward beyond the apex. The 
apex of the shell is nearly plain and smooth, though sometimes 
slightly indented, and does not have a thickened deposit of enamel 
extending beyond the edge of the notch, as in the latter. 
Actzon melampoides Dall. 
Bull. Mus. Comp. Zool., vol. ix, p. 95, 1881. 
Station 2115, off Cape Hatteras, in 843 fathoms, one specimen (No. 
35,565). 
The original specimens, described by Mr. Dall, were from the Gulf 
of Mexico, in 310 fathoms, Blake Expedition. I have compared our 
example with Mr, Dall’s specimens, 
