166 



LAND AND FRESH-WATER SHELLS OF N. A. [I'ART I. 



as if covered with scales ; when these are not apparent, it is marked with 

 oblique wrinkles. Greater diain. 33, lesser 2(j; height 19 mill. 



Helix tudiculata, Binney, Bost. Journ. Nat. Hist. IV, 360, pi. xx (1843) ; 

 Terr. Moll. II, 118, pi. xvi.— Pfeiffer, Men. Hel. Viv. I, 2S3 ; IV, 



270.— W. G. BiNNEY, Terr. Moll. IV, 7. 

 Fig. 287. Aylaja tudiculata, Tryon. Am. Journ. Conch. II, 



313, pi. V, f. 13 (1867). 



California, at San Diego, to Washington 

 Territory. 



I have lately received this species under 

 the name of " H. cypreophila, Newc, Cop- 

 peropolis, Cal.," from Dr. Newcomb, one 

 of whose specimens is here figured. 



Helix cypreophila. 



Helix nickliniana, Lea. — Shell subumbilicated, conic-globose, 

 rather thin, the surface lightly markeil by the lines of growth, faintly 

 indented and delicately shagreened with fine microscopic grannies ar- 

 ranged in quincunx ; pale horn-color or sometimes 

 Fig. 288. cinereous, girdled with a single narrow chestnut 



bronze zone, paler at its edges ; the whole covered 

 with a thin, yellowish-brown epidermis ; spire ele- 

 vated, whirls six, moderately convex, tbe outer one 

 ventricose, with some approacli to an angular peri- 

 phery ; base tumid, depressed at centre, and per- 

 forated by a very small umbilicus ; aperture rounded, 

 Helix nickliniana. forming two-thirds of a circle, banded within ; peri- 



stome white, slightly reflected above, more so below, 

 until at the umbilicus it is quite revolute, and mostly covers the opening. 

 Greater diam. 28, lesser 23 ; height 19 mill. 



Helix nickliniana, Lea, Trans. Am. Phil. Soc. VI, 100, pi. xxiii, f. 84 ; 

 Obs. II, 100 (1839) ; Troschel, Arch. f. Nat. 1839, II, 221.— Binney 

 (pars), Terr. Moll. II, 119, pi. vi, a.— \V.' G. Binkey, Terr. Moll. IV, 

 7.— Pfeiffer, Mon. Hel. Viv. IV, 269. 



Helix califnrniensis, Pfeiffer, Mon. Hel. Viv. I, 339 ; III, 229 ; in Chem- 

 nitz, ed. 2, 332, pi. Ivii, f. 14-15, excl. var. 2 (1846).— Reeve, Cod. 

 Icon. no. 661. — Not of Lea. 



Helix arboretorum, Valenciennes, Voy. de la Venus, Moll. pi. i, f. 3 (see 

 Terr. Moll. IV, pi. ixxvi, f. 13). 



Helix nemorivaga, Valenciennes, /. c. f. 1 (see Terr. Moll. pi. Ixxlx, f. 11). 



