140 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
are preserved at the State fish commission, which has a station 
here. Tins species certainly occurs occasionally, if rarely. 
GASTEROPODA. 
AMPHINEURA. 
POLYPLACOPHORA. 
Chaetopleurci apiculata (Say). Verrill (’73), p. 661. Chiton 
a. Smith and Prime (MO), p. 392. S. 
Abundant and unusually large on, and especially in, old shells, 
etc., 1-3 fath. 
PROSOBRANCHIATA. 
Docoglossa. 
Acmaea testudinalis (Muller). Verrill (’73), p. 661. Tectura t. 
Smith and Prime (’70), p. 392. N. 
One shell, empty but fresh. Doubtless occurs very rarely on 
the more exposed points where beach boulders offer some poor 
foothold. 
Ptenoglossa. 
/Scala lineata (Say). Scalaria l. Smith and Prime (’70), 
p. 394. Verrill (’73), p. 660. S. 
One hue specimen, empty but fresh, buried in clean, sandy mud 
at low water. 
Taenioglossa. 
Naticidae. 
JSTeverita duplicata (Say). Verrill (’73), p. 646. JSfatica d. 
Smith and Prime (’70), p. 396. S. 
Common on the firmer bottoms at and below low water. 
Lunatia keros (Say). Verrill (’73), p. 646. JShaticah. Smith 
and Prime (’70), p. 395. 
Common but less so than the preceding, with which it would 
seem to compete. 
The var. triseriata (Say) Verrill (’73), p. 646. JYcitica t. Smith 
