378 A. #. Verrili—Marine Fauna of North America. 
Light of Sable Island, in 160 fathoms, was presented by Dennis 
Thelneny (schooner Wm. Thompson.) 
MOoLLUsCca. 
Sepiola leucoptera, sp. nov. 
Species probably small, but the three specimens observed 
are probably not full grown. Body short, depressed, with the 
mantle smooth. Ventral surface, in middle, with a somewhat 
Length to base of arms, 14™™, in alcohol; of mantle above, 
8™™ ; breadth, 7"; breadth across fins, 16™™. 
Gulf of Maine, 30 miles E. from Cape Ann, 110 fathoms, 
muddy bottom, associated with Rossia sublevis and Octopus 
Baird, Aug., 1878. 
Chiton (Acanthopleura) Hanleyi (Bean). 
A well-characterized living example of this species, new to 
America, was recently detected by Mr. Sanderson Smith, of our 
party, while dredging 8} miles S. by E. } KE. from Cape Ann, 
in thirty-eight fathoms, sand and gravel. 
Pecten vitreus (Chemnitz). 
This elegant little species, not before known from America, 
has been found in considerable numbers attached to Puragorgi4 
arborea and Acanella Normani, from 220 fathoms, on the eastern 
slope of George’s Bank (from the “Alice G. Wonson”), and on 
Acanella, from Banquereau, 150 fathoms, from Capt. Morrisey 
(schooner ‘“‘ Alice M. Williams”). 
Easily distinguished by its delicate, white, translucent shell ; 
covered on both valves with very fine radiating striz, and w! bh 
delicate concentric lamelle, which rise into numerous, minute, 
delicate, vaulted seales. The largest specimens are about ‘5 
of an inch in diameter, 
