6 THE SPECIES OF 



I. THE SPECIES OF THE PACIFIC COAST. 

 FAMILY LIMACEA. 



GENUS ARION FERUSSAC. 



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



Arion foliolatus GOULD, Ex. Ex. p. 2, fig. 2 a b. 



GENUS UMAX 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 DRAPANAUD. 

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



Succinea Nultalliana LEA, Tr. Am. Phil. Soc. ix. p. 4. 



PFEIFFER, Mon. Hel. Viv. ii. 523; Hi. 15. 



SUCCINEA OREGONENSIS LEA vol. ii. p. 77, pi. Ixvii. c, fig. 2. 



Succinea Oregonensis LEA, Tr. Phil. Soc. ix. p. 1, p. 5, (1844). 



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



SUCCINEA RUSTICANA GOULD. 

 PLATE LXXIX. FIGURE 14. 



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

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

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

 quans ; columella arcuata, perspicue plicata. (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. 15. 



DESCRIPTION. 



Shell elongate, ovate conical, rather large, thin and fragile ; pale 

 greenish horn color, surface rude and without lustre, coarsely and 



