130 A MANUAL OF AMERICAN LAND SHELLS. 



nelix exnrata, Pi-kiiker, Proc. Zool. Soc, 1857, 108; Mon. Ilel. Viv., iv, 268.— W. G. 



BiNXKY, T.'iT. Moll., iv, 12; L. & Fr.-W. Sh., i, 168, fig. 292 (1869). 

 Aglaja exaiata, Tykon, Am. Journ. Conch., ii, 31? (1867). 

 Ario)ita esarata, W. G. Binney. Terr. Moll., v, 363. 



Californiaii Region, from near San Francisco to Santa Crnz and 

 Marin County, only a range of eighty miles. A species of the Coast 

 Eange. 



The largest individual I have seen has a greater diameter of 40'"'". 

 There is an albino form, and one in which the band is subobsolete. 



Jaw as usual ; ribs. 



The lingual membrane (Terr. Moll., V, Plate IX, Fig. O) has 54-1-54 

 teeth, 19 perfect laterals; the twenty first tooth has its inner cutting 

 point split; the nineteenth tooth is the first with side cusp and cutting 

 point. 



Genitalia as in KicJcUniana. 



Ai'ionta Californiensis, Lea. 



Shell subperforate, ventricose, subglobular, thin and transparent, 



shining, delicately indented and granulated, faintly but regularly 



striate, of a pale yellowish horn-color, minutely flecked with pale spots 



and girded by a narrow brown band, paler at its edges; spire elevated ; 



Fig. 104. whorls 5, convexly rounded, the last very broad, vesicular; 



-^"^ base ventricose ; a])erture subcircular, silky and banded 



r, within; the peristome slightly reflected, thickened within, 



vx **•'' "l more everted towards its columellar margin, where it is 



'^'-Ji^^^' roundly reflected, nearly covering a very small umbilical per- 



A. cabfmmen- foratiou. Greater diameter 19, lesser IG'""'; height, 15""". 



Helix Call Jo mi ends, Lea, Trans. Am. Phil. Soc, vi, 99, ]>1. xxiii, fig. 79; Ol)s.. ii, 

 99 (1839).— Tkoscuel, in Weigm. Arch., 1839, ii, 221.— Binney, Terr. Moll., 

 ii, 121, 1)1. vi, fig. 2.— W. G. BinneI", Terr. Moll., iv, 13; L. & Fr.-W. Sli., 

 i, 170 (1S69).— De Kay, N. Y. Moll., 46 (1843), not of Pfeiffek, (?) CuEMxrrz, 

 Reeve. 



Helix vineia, Valencienxes, Voy. de. la Yenus, Moll., pi. i, fig. 2, no descr. — Reeve, 

 Con. Icon., No. 660. — Pfeifeer, Mou. Hel. Yiv., iii, 183; iv, 269; in Chem- 

 nitz, ed. 2, ii, 487, tab. clx, fig. 2 (1854). 



Arionia Califoniiensis, Try.on, Am. Journ. ConcL., ii, 317 (1866).— W. G. Binney, 

 Terr. Moll., v, 365. 



A species of the California Eegion, near Monterey.* I have a spec- 

 imen with simply a broad white band. The typical shell is readily 

 distinguished by its thin, delicate shell and globose form, but the 

 species is very variable, and has been unfortunate in hiiving come 

 into knowledge of conchologists from widely separated localities and 



*Mr. Lea's original specimen Avas from "Point Cypress, Monterey." 



