268 WEST COAST SHELLS 



lar Zonite, is a European species, but it has become 

 widely distributed, even on the Pacific Coast. The 

 shell is very much depressed, thin, fragile, and pellu- 

 cid; the epidermis is greenish-yellow and polished, 

 and the base is rounded. The little snail that builds 

 and inhabits this shell is of a light blue color, very 

 pretty and quite active. It is a snail that follows 

 civilization, and delights to live in cellars and damp 

 places about buildings. Most of the snails of the 

 world resent the intrusion of man into their haunts, 

 but this one affiliates with him and is pleased to 

 remain about his habitations. So far as I know it 

 never does any harm, and it seems to get its living 

 from the mould that is found in cellars and in wet 

 places. The diameter of the shell is from six to 

 twelve millimeters. The larger variety is classed by 

 some as Vitrea draparnaldi. Beck. 



Zonites arboreus^ Say, the Bush Zonite, has a spire 

 of four or five whorls, so much flattened that the 

 shell appears nearly like a circular disk. The shell is 

 smooth, amber-colored, very thin, and almost trans- 

 parent. Its diameter is three or four millimeters. 

 This species, which hides under leaves and among 

 bushes, inhabits many parts of North America. 



tZonitoidcs pu- 

 getensis^ Dall, the 

 Seattle Zonite, is 

 represented in Fig- 

 ure 263 very great- 

 ly enlarged, for the 

 real diameter is 

 Fig. 263. X Y (*) only 1 .5 mm. This 



