110 
WEST AMERICAN SHELLS 
class of the Gasteropoda, named Acteon puncto- 
calatus, Cpr., the Barrel-shell, (Rhextaxis puncto- 
Fig. 95 
elata), Figure 95. It is a pretty little 
thing, which is sometimes found washed up 
on the beach, and at certain times of the 
year it may be found alive in the tide-pools, 
where it has gone to lay its eggs. Its length 
is about half an inch. There is a little fold on the 
columella. Its surface is pure white, with two 
series of spiral bands, narrow and black. I have 
gathered this species alive on Dead Man’s Island, 
near San Pedro. 
Acteaon painet, Dall, Paine’s Acteon. This is 
one of the new species recently secured by Messrs. 
Lowe and Paine, while dredging near Avalon, 
Santa Catalina Island. The length of the shell is 
8 mm., and it may be distinguished from the last 
species by its short spire, stouter form, and the 
absence of color bands. 
Tornatina culcitélla, Gld., the Pillow 
Lathe-shell, is shown in Figure 96. It has a 
eylindrical body, as if it had been turned in 
a lathe, and it is dainty enough for a fairy’s 
bolster. The eolor is brownish, and fresh 
specimens are banded with numerous Fig. % 
microscopie striw. Large specimens are nearly an 
inch long. 
Tornatina harpa, Dall, the Harp Lathe-shell, is 
smaller, being about six millimeters in length. The 
color is white, and it is easily distinguished by the 
longitudinal grooves and lines on the upper half of 
the last whorl. 
