50 WEST AMERICAN SHELES 
Figure 33 shows the 
appearance of the Ks- 
quimalt Astarte, As- 
tarte esqumalti, Baird, 
which may be easily 
recognized by its ir- 
regular sculpture, so 
clearly shown in the fig- 
ure. This species ranges 
from the Aleutian Islands to Puget Sound. 
Astarte vernicosa, Dall, the 
Varnished Astarte, is a small 
species, with a shell covered 
with yellow-brown periostra- 
cum, brilliantly polished. It is 
found in Bering Sea. There are 
also several other species of Fig. 34, x £ (*) 
Astarte, which will be briefly mentioned in the 
List. 
Crassatélla marginata, Cpr., the Margined Cras- 
satella, is a minute, southern shell, about the size 
of a large pin-head. Somewhat triangular, yel- 
lowish, marked with brown chevrons. 
Chlamydoconcha orcuttr, Dall, Oreutt’s Cloak- 
shell, is a singular mollusk, discovered by Mr. 
Charles R. Oreutt under stones in False Bay, near 
San Diego. It is a bivalve mollusk, but the shells, 
singularly enough, are internal, and very minute 
when compared with the size of the body, which is 
about an inch long. The animal is shaped some- 
what like a cowry, and the flesh is translucent and 
jelly-hke. 
Fig. 38, x 7 (*) 
