AIR-BREATHERS 131 
ture, one fine day, and you see the result in the 
engraving. 
The shell is umbilicated and seven-whorled; the 
spire is low conical, and the outer lp is but 
slightly thickened. The peristome is whitish, but 
the shell is dark chestnut, with a still darker band, 
which is edged with equal stripes of light yellow. 
The animal is slate-colored, and its surface is cov- 
ered with numerous little elevations. The diame- 
ter of the shell is about three-fourths of an inch, 
though specimens are occasionally found that are 
somewhat larger. 
Epiphragmophora sequoicola, Cooper, the Red- 
wood Snail. This species resembles the last in size 
and general form, but it has a more elevated 
spire. The surface of the shell is not smooth, but 
is somewhat roughened by cross lines, while the 
upper whorls have many crowded granulations. 
It is found in the vicinity of the coast, near Santa 
Cruz. Cal: 
Epiphragmophora trasku, Newe., Trasks’s 
Snail, comes from the coast regions of southern 
California. It has a small umbilicus, six whorls 
not greatly elevated, which are dark horn-colored, 
with a narrow chestnut band which is edged on 
both sides with white or yellow. The surface is 
marked with microscopic strie. The diameter 
of the shell is usually less than an inch. There are 
several varieties, which will be mentioned in the 
List. 
Epiphragmophora carpentéert, Newe., Carpen- 
ter’s Snail, comes from San Diego and Mexico. It 
