THE PACIFIC COAST. 13 



antice vix decendens, circa unibilicuni mediocrem, apertum subcompres- 

 sus ; apertura obliqua, late lunaris; perist. leviter albo-labiatum, margin- 

 ibus vix convergentibus, dextro breviter expanse, colmnellari superne 

 triangulatim dilatato, patente. [Pf.] 



SYNONYMS AND REFERENCES. 



Helix exarata PFETFFER, Proc. Zool. Soc. of London, May, 1857, p. 108. 

 Diam. maj. 30, min. 25, alt. 16 mill. Hab. California ? (Pf.) 



I have not seen this species. The description given 

 above is PfeifFer's. 



HELIX CALIFORNIENSIS LEA vol. ii. p. 121, pi. vi. fig. 2. 



Helix Californiensis TROSCHEL in Wiegm. Arch. 1839, ii. 221. 



DEKAY, N. Y, Moll. p. 46, not of Pfeitfer, Chemnitz, 



Eeeve. 



Helix vincta VALENCIENNES, Voy. dela Venus, Moll. pi. 1, fig. 2, absq. desc. 

 CHEMNITZ, ed. 2, vol. ii. p. 487, t. 160, fig. 2 (1854). 

 REEVE, Con. Icon. No. 660. 

 PFEIFFER, Mon. Hel. Viv. iii. 183. 

 W. G. BINNEY, Notes, p. 9. 



In my notes No. 2, 1 expressed the opinion that H. vincta 

 figured by Valenciennes was distinct from this species. 

 Having since carefully compared Lea's original specimen 

 with Valenciennes's figure, I am convinced of their iden- 

 tity. The figure in the Terrestrial MoUusks is a correct 

 representation of this species in a fresh state. Reeve's 

 figure 660 is also good. That of Chemnitz (1. c.) is less 

 characteristic. Lea's figure is very poorly drawn, and at 

 best represents a dead and worn specimen. 



Under the name of H. vincta^ therefore, descriptions and 

 figures of H. Californiensis are to be found in the works 

 referred to in the synonymy. All other descriptions and 

 figures referred to Helix Californiensis represent Helix 

 Nickliniana, including those given in Chemnitz, PfeifFer, 

 and Reeve. 



HELIX RAMENTOSA GOULD vol. iii. p. 12. 



