1358. 
WEST AMERICAN SHELLS 
M. hindsi (Sby) Rve., Middle California. 
M.lignosa, Gld., Van. Is. to Monterey. 
M.imporcata, Cpr., Puget Sound; Santa 
Barbara. 
M. sinuata, Cpr., Puget Sound; S. F. 
M. ciliata, Sby., Aleutian Is. to Monterey. 
var. wossnessenski, Midd., Sitka to Wash. 
M. heathi, Pilsbry. 
Genus, placiphoretla, Carpenter 
P. velata, Cpr., Humboldt Bay to Lower 
California. 
P. borealis, Pils., Bering Sea. 
Family, ACANTHOCHITIDAE 
Genus, Acanthochites, H1SSO. 
A. avicula, Cpr., Catalina Is. 
var. diegoensis, Pils., San Diego. 
Genus, xatherina, Gray 
K. tunicata, Wood, N. Pacific to Catalina Is. 
Genus, amicula, Gray 
A. vestita, Sby., Arctic to St. Paul. 
A. pallasti, Midd., Aleutian Is., ete. 
Genus, Cryptochiton, Gray 
C. stelleri, Midd., Aleutian Is. to Sta. Bar- 
bara Islands. 
Class, CEPHALOPODA 
Family, ARGONAUTIDAE 
Genus, Argonauta, Linné 
A. pacifica, Dall, U. S. N. M. XV, p. 217. 
Family, OCTOPODIDAE 
Genus, octopus, d’Orbigny 
