THE NAUTILUS. 79 
It may be mentioned here that typical P. fallax has been collected 
in the Sand Creek, Ottawa Co., and Plaster Creek, Kent Co., Mich., 
by Dr. R. J. Kirkland. 
Pis. walkeri var. mainense n. 
Differs from the type in the following points: it is smaller, 
shorter, especially so the anterior part, and less saccate. But it re- 
resembles P. walkeri by the small beaks situated near the very short 
and truncated posterior end, the surface sculpture and color, and 
the thin shell. Placed side by side with typical specimens, which, 
in outline, have a marked resemblance with P. virginicum, it would 
hardly be ranged under the same species. But by comparing num- 
erous specimens from different places, I came to the conclusion that 
they are not distinct. 
Habitat: Different waters near Caribou, Aroostook Co., Maine, 
collected by Mr. Olof O. Nylander. 
New Philadelphia, Ohio, Sept., 1898. 
HALIOTIS CRACHERODII Var. CALIFORNIENSIS Swainson. 
BY H. A. PILSBRY. 
In his “ Zoological Illustrations,” Vol. I, pl. 80 (1821-2) Swain- 
son describes and figures the “small-holed Californian ear-shell,” 
which differs, he states, from the ordinary black ear-shell by its 
more numerous smaller holes, deeper spiral, differently shaped outer 
lip, ete. Mr. Fred L. Button, of Oakland, has lately forwarded to 
me a specimen from Guadaloupe Island, off Lower California, which 
agrees well with Swainson’s account and figures, and unmistakably 
indicates, I think, a valid variety of H. Cracherodii. Mr. Button 
writes: “It came to me as H. Cracherodii var. californica Stearns, 
as | wrote you. On looking it up I find it mentioned several times 
by Dr. Carpenter, both in his Brit. Asso. Report, 1856 (pp. 174, 199, 
291, 520, 350 and 351), and in his Smithsonian Report, 1872 (pp. 
6, 6, 13, 84, 100 and 137). In the latter, he speaks of it as the rare 
var. of H. Cracherodii, and calls it an ‘extreme var. of H. cracher- 
odii, having 10-11 holes (p. 15). 
“Swainson’s H. californiensis was figured in Zool. II., 11, 80, with 
10 small holes. I have one with 16 holes. The specimen I send is 
from Guadaloupe Island, Lower California, nearly 1,000 miles south 
