THE PACIFIC COAST. 19 



given above, and a fac-simile of his figure in the second 

 edition of Chemnitz is given on the plate referred to. 



HELIX AREOLATA Sowerby,. . . .vol. iii. p. 14, pi. Ixxvi. fig. 11; van y. 



fig. 3. 

 Helix areolata Pfeiffer, 1. c. iii. 127. 



Chemnitz, 1. c. 1, 248, (1846). 

 Reeve, Con. Icon. No. 664, (1852). 



The original figure of Pfeiffer is copied on the plate 

 referred to from Chemnitz, edition 2. Two varieties are 

 mentioned by him. 



"/?. Dente aperturae obsolete. 



" y. Minor, globosa, dente aperturae valido." (fig. 3). 



HELIX VANCOUVERENSIS Lea, vol. ii. p. 166, p. xx. 



Helix Vancouverensis Troschel, Ar. f. Nat. 1839, ii. 221. 

 Pfeiffer, 1. c. iii. 155. 

 Chemnitz, ed. 2, ii. 146, pi. xciv. f. 21-23. 

 Gould, U. S. Expl. Ex. p. 36, fig. 37. 

 Keeve, Con. Icon. No. 669 (1852). 

 Helix vellicata Forbes, Proc. Zool. Soc. Loudon, Mar. 1850, p. 75, pi. ix. fig. 1. 

 Chemnitz, ed. 2, ii. 454, pi. cliv. fig. 42-44. 

 Reeve, Con. Icon. No. 673, (1852). 

 Pfeiffer, Mon. Hel. Viv. iii. 155. 



From the description and figure of Forbes, as well as 

 from specimens received from Mr. Cuming's collection, 

 I am satisfied of the identity of H. vellicata with this 

 species. Forbes's description is given below. 



H. t. aperte umbilieatS, tenui, convexo-depressa, subnitida, sulcato- 

 striata, striis minutissimis spiralibus decussata, laete viridibus; spira con- 

 vexiuscula, anfr. 6, ultimo rotundato, magno, antice dilatato, subdescen- 

 dente ; ap. perobliqua, lunato-oblonga ; faux alba, perist. margine subre- 

 flexo, superne deflexo-sinuato. Diana, max. 22, min. 18, alt. 8 mill. — 

 Panama ? 



Distinguished from its near allies by the peculiar deflection of the upper 

 portion of the lip margin, 



HELIX SPORTELLA Gould, vol. ii. p. 211, pi. xxii a. fig. 1. 



Helix sportella Gould, U. S. Expl. Ex. p. 37, fig. 42. 

 Pfeiffer, 1. c. iii. 104. 



The revolving striae appear to be wanting in some indi- 



