238 WEST AMERICAN SHELLS 
suture, while the form of other specimens is much 
depressed. 
From a large shell we turn to a very 
small one, Leptothyra carpentéri, Pils- & 
bry, the Red Turban-shell, (Leptonyx rig. 23 
sanguineus), Figure 263. The whorls are few and 
are marked with fine, distinct, spiral ridges, and 
the little operculum is solid and shelly. The color 
is reddish, sometimes banded or faded. This 
species may be found at low tide, living upon 
rocks, but the hermit crabs bring up many more 
dead specimens. 
Leptothyra baccula, Cpr., the Berry Turban- 
shell, (Leptonyx bacula), is shaped like the last, 
but is smaller, being only one-eighth of an inch in 
diameter. It is nearly smooth, dark or ashy, and is 
found in the south, especially around Catalina 
Tsland. 
