180 WEST AMERICAN SHELRES 
with a brown epidermis, which is laid on 
in little ridges, resembling a coating of 
fine, soft cloth. This species lives in the 
south, while another one, Macron Kellét- 
’ tii, A. Ad., Kellett’s Macron, is more 
Fig-178 = commonly found on the coast of Lower 
California. It has a larger shell, which is of a 
darker color. The aperture is very large, the 
outer lip thin, and the canal a mere notch. Its 
length is rather more than an inch. 
The large shell 
shown in Figure 
179 comes from 
northern Alaska, 
and has received 
several names. It 
will be safe, how- 
ever, to call it Vol- 
utopsius — kobelta, 
Dall, Kobelt’s Vol- 
utopsius. It is not 
a common - shell, 
and the specimens 
that are collected 
are often  beach- 
worn, but the pic- 
ture represents a 
perfect specimen. 
Its full length is about four inches. 
Volutopsius castaneus, Morch, the Chestnut 
Volutopsius, is found more abundantly than the 
last species. It lives in shallow water off the 
Fig. 179, x # (4%) 
