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 bv Mr. Olof O. Nylander. 



/<yx^>*"M 



New Philadelphia, Ohio, Sept., 1898. 



^v&w* 



HALIOTIS CRACHERODII Var. CALIFOKNIENSIS Swainson. 



BY H. A. PILSBRY. 



In his " Zoological Illustrations," Vol. II, pi. 80 (1821-2) Swain- 

 son describes and figures the " small-holed California!! ear-shell," 

 which differs, he states, from the ordinary black ear-shell by its 

 more numerous smaller holes, deeper spiral, differently shaped outer 

 lip, etc. 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 I 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, 320, 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. 13). 



" Swainson's H. calif orniensis was figured in Zool. 111., II, 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 



