6 Binney on Terrestrial Mollusks. 



I. The Species of the Pacific Coast. 

 FAMILY LIMACEA. 

 Genus ARION Ferussac. 



ARION FOLIOLATUS Gould vol. ii. p. 30, pi. Ixvi. fig. 2. 



Avion foliolatus Gould, Ex. Ex. p. 2, fig. 2 a b. 



Genus LIMAX Ferussac. 



LIMAX COLUMBIANUS Gould vol. ii. p. 43, pi. Ixvi. fig. 1. 



Limax Columbianus Gould, Ex. Ex. p. 3, fig. 1 a b c. 



FAMILY HELICEA. 



Genus SUCCINEA Dkapanaud. 

 SUCCINEA NUTTALLIANA Lka vol. ii. p. 81, pi. Ixvii. a, fig. 2. 



Succinea Nuttalliana Lea, Tr. Am. Pliil. Soc. ix. p. 4. 



Pfeiffek, Mou. llcl. Yiv. ii. 523; iii. 15. 



SUCCINEA OREGONENSIS Lea vol. ii. p. 77, pl. Ixvii. c, fig. 2. 



Succinea Oregonensis Lea, Tr. Phil. Soc. ix. p. 1, p. 6, (1844). 

 Pfeiffek, Mon. Hel. Viv. ii. 523; iii. 15. 



SUCCINEA RUSTICANA Gould. 



Plate LXXIX. Figure 14. 



T. clongata, ovato-conica, tenuis, pallide virens, impolita, lineis in- 

 equallbus incrementalibus et crassis striata, subtus convexa ; spira acuta, 

 anfr. 3 convexiusculis ; apertura ovata, quadrantes tres longitudinis ade- 

 (juans ; oolunu'llfi arcuata, perspioue plicatu. (Gould). 



synonyms and references. 



Succinea ruslicana Gould, Pr. Boston Soc. Nat. Hist. ii. 187, Dec. 1846; Expe- 

 dition Shells, 31 ; Mollusca of Exploring Ex. p. 28, fig. 29, 

 1852. 

 Pfeiffer, Mon. Hel. Viv. ii. 523; iii. 16. 



DESCRIPTION. 



S/ic/l L'lungate, ovate conical, rather large, tliin and fragile ; pale 

 greeni.sli horn color, surface rude and without lustre, coarsely and 



