ZONITES. 



161 



. CHERSINELLA, Dall. PI. 51, figs. 43-45. 



Narrowly perforated, depressed, transparent, very light horn- 

 color, shining, with distant incremental wrinkles ; whorls 4, 

 scarcely convex, the last depressed globose. Diam. 3 mill. 



Big Trees, Calaveras Co., Gal. 



II. SCULPTILIS, Bland. PI. 51, figs. 3-4. 



Scarcely perforate, depressed, pale horn-color above, lighter 

 j below, with regular impressed striae, shining ; whorls t, planulate, 

 hist whorl rapidly enlarging, flattened below, and a little exca- 

 jvatcd in the umbilical region, perforation almost entirely covered 

 by the narrowly reflected columellar lip. Diam. 7-12 mill. 



North Carolina, Tennessee, Alabama, Texas. 



|ll. ELLIOTTI, Redfield. PI. 51, figs. 5, 6. 



Xarrowly umbilicated, finely striate, greenish horn-color, hardly 

 ;ranslucent, shining and smoother beneath; whorls 5, the last 

 sometimes very slightly depressed at the aperture, suture deeply 

 impressed, peristome a little sinuate, acute but thickened within. 

 Diam. 9 mill. 



Mountains of Georgia, Tennessee, N. Carolina 



and West Virginia. 

 :. WIIITNEYI, Newcomb. PL 51, figs. T, 8. 



Umbilicated, subplanate,thin, smooth, scarcely striate, shining, 

 finoky horn-color; whorls 4, the last planate above and below. 

 Diam. 5'5 mill. 



Near Lake Tahoe, California. 



'.. ARBOREA, Say. PI. 51, figs. 9-1 T. 



Umbilicated, depressed, thin, pellucid, smooth, shining, yel- 

 >wish corneous, or amber-colored ; whorls 4-5, with very minute 

 licroscopic oblique striae, umbilical region indented. 

 Diam. 5 mill. 



Labrador to Florida and Texas, Great Slave Lake, 



Montana, Nevada, British Columbia to San Diego, Gal.; 



also Cuba, Haiti, and Guadeloupe, W. I. 



The Florida and West Indian specimens have received the 

 imeof H.ottonis, Pfr. (figs. 12-14), and those of California 

 tve been called H. Breweri, Newcomb (figs. 15-lf ). 

 11 



