220 BULLETIN OF THE 
It is rather low and broad, with the posterior slope slightly oblique, the 
beak prominent, curving well over, with about two smooth whorls standing 
out on the right side. The anterior slope is convex, with a long and rather 
broad, partly closed slit tapered to a narrow point at the upper end, and 
reaching well up on the beak. The sculpture consists of radiating, well 
rounded, alternately larger and smaller ribs, crossed and rendered somewhat 
nodulose by rather regular concentric lines or threads. Interior smooth, with 
plain margin. 
HETEROPODA. 
Atlanta Peronii Lzs. 
VERRILL, Trans. Conn. Acad., V. p. 529, 1882; VI. pl. 28, figs. 4, 4 a, 1884. 
A fragment, Station 325, off Cape Fear, N. C., in 647 fathoms. 
A not uncommon pelagic species recorded by the U. S. F. C. from east of 
George's Bank to off Cape Hatteras, N. C. Dead shells in 16 to 1,825 fathoms; 
living at the surface. 
. Extending south to Bermuda (Dall). 
TECTIBRANCHIATA. 
Scaphänder nobilis VERRILL. 
Trans. Conn. Acad., VI. p. 209, pl. 82, figs. 18-18 d, 1884. 
p 
Two living and three dead specimens, Station 308, east of George's Bank, in 
1,242 fathoms. 
A rare deep-water species first found by the U.S. F. C. in 1883, ranging 
from east of George's Bank to off Delaware Bay, in 705 to 1,742 fathoms; not 
living below 1,434 fathoms. 
Mr. Dall records this species from the Gulf of Mexico and off Tobago, in 880 
and 1,639 fathoms, dead. 
Scaphander puncto-striatus (Mien.) Ap. 
Three living specimens and one dead (young), Station 303, east of George's 
Bank, in 306 fathoms. One dead, Station 305, east of George’s Bank, in 810 
fathoms. One living, Station 306, east of George’s Bank, in 524 fathoms. Three 
dead (two young), Station 308, east of George’s Bank, in 1,242 fathoms. One 
dead, Station 309, south of George’s Bank, in 304 fathoms. Two living, Station 
310, south of Martha’s Vineyard, in 260 fathoms. Four dead (one young), 
Station 331, off Cape Hatteras, N. C., in 898 fathoms. Two living, Station 
