150 ZONITES. 



Newc, with a somewhat thicker shell, comes from 

 northern California. 



Zonites vtridulus, Menke, vi-rid'-u-lus, is similar 

 in shape to the last, small, very thin and transparent, 

 of a slightly greenish tinge; the animal is said to be 

 bluish black. This species also is widely scattered, 

 the specimens described coming from Seattle. 



Zonites fnlvus, Drap., ful'-vus. Shell small, thin, 

 somewhat conical, without umbilicus; whorls five or 

 six, narrow, suture distinct, aperture narrow and 

 oblong, color light amber, diameter one-eighth of an 

 inch. It is found in Europe, Asia and North Amer- 

 ica; the specimens described came from near Salt Lake. 



Zonites conspectus, Bland, con-spek'-tus. Shell 

 very small, with an umbilicus, and a moderately ele- 

 vated spire of four whorls, which are marked by fine 

 cross ribs. Horn-colored; diameter one-sixteenth of 

 an inch. Found in Alaska, Oregon, California and 

 Colorado. The specimens described were gathered 

 near San Francisco. 



For the further study of these minute species the 

 best book to consult is the ''Bulletin of the United 

 States National Museum, No. 28." It is entitled, 

 "A Manual of American Land Shells. By W. G. 

 Binney." It is published at Washington, D. C, 

 under the direction of the Smithsonian Institution. 



Zonites Whitneyi, Newc, Whit'-ney-i. Shell thin, 

 spire scarcely elevated, whorls four, the last one 

 being much the largest, umbilicus small, aperture 

 somewhat circular, diameter nearly one-fourth of an 

 inch; from the Sierras, also from Emigrant canon. 



Zonites cellarius, Miiller, sel-la'-ri-us. The shell 

 of this little snail is thin, fragile, translucent, smooth, 

 and of a greenish yellow color. The spire is but 



