The Nautilus, XIV. 



Plate I. 



Fossil Land Shells of San Nicolas Island, Cal. 



Figs. 1 Helix tryonii, vars. maim and minor Hemph. Figs. 2, Helix feralis Hemph Figs. 3, Helix 

 sodalis Bempn. Figs. 1 a, Succinea avara Say.: 6, S. a. vermeta Say.: c, S. a. guadaltipmsis Dall. 



