nodulous revolving ridges more or less strongly elevated in difiFerent specimens, 
thè three middle ones being thè most prominent, and faint revolving lines being 
also traceable occasionally between thè ridges. Aperture very oblique, smooth, 
white or purplish within, outer lip sharp, columella broad. straight, generally 
with a chink behind it. Anterior margin a little produced. Long. -41 in., lat. 
•53 in., of an average specimen. Animai and operculum precisely as in L. Sit- 
kana, which was abundant on thè same rocks. Hab. Living at Gull rocks 
Akutan Pass, Aleutian Islands, abundantly. — W. H. Dall. 
This is a very remarkable and distinct species, resembling no other on thè 
West American coast. 
Notes. — Buccinum Kennicottii, Dall, proves on obtaining specimens contain- 
ing thè soft parts and thè operculum, to be a Chryaodomus. It was originally 
described as a Buccinum, in defereuce to thè opinion of thè late Dr. William 
Stimpson, who had recently monographed thè northern species of that group. 
Its distributioii is from thè Sliumagins eastward, not as was originally reported 
from TJnalashka. 
Buccinum Baeri, Midd. proves to be a very marked race of B. cyaneum. B. 
Fischerianum, Dall, which was suspected at thè lime it was described to be 
similarly related to B. cyaneum, proves to be distinct. 
Haliotis, which has long been tabulated as an inhabitant of tue Aleutian 
Chain, does not exist in that part of thè archipelago east of Unalashka, and 
probably not in these islands at all. 
