192 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
ISCHNOCHITON SERRATUS Carpenter, 18^/. 
Ann. Mag. Nat. Hist., ser. 3, vol. 13, p. 315. — Pilsbry, Man., vol. 14, p. 122 ; 
vol. 15, p. 78, pi. 16, figs. 42-46. 
San Diego, California, to Gulf of California. 
ISCHNOCHITON CORRUGATUS Carpenter, 1892. 
Pilsbry, Man., vol. 14, p. 123. 
Catalina Island, California, to Tqdos Santos Bay, Lower California. 
ISCHNOCHITON BERRYI Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 5^, No. 2283, p. 507. 
Monterey to San Pedro, California. 
Section LEPIDOZONA Pilsbry, 1892. 
ISCHNOCHITON WILLETTI Berry, 1917. 
Proc. Cal. Acad. Sci., ser. 4, vol. 7, p. 236, figs. 1, 2. 
Forrester Island, Alaska. 
ISCHNOCHITON MERTENSII Middendorff, 1846. 
Bull. Acad. Sci. St. Petersburg, vol. 6, p. 118. — Pilsbry, Man., vol. 14, p. 
125, pi. 26, figs. 20-26. 
Sitka, Alaska, to San Pedro, California. (Lower California?) 
ISCHNOCHITON COOPERI Carpenter, 1892. 
Pilsbry, Man., vol. 14, p. 127, pi. 26, figs. 27-30. 
Mendocino County, California, to Catalina Island. 
ISCHNOCHITON COOPERI ACUTIOR (Carpenter MS.) Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 55, No. 2283, p. 508. 
San Diego, California, to Los Animas Bay, Lower California. 
ISCHNOCHITON CLATHRATUS Reeve, 1847. 
Conch. Icon., Chiton, pi. 18, fig. 113. — Pilsbry, Man., vol. 14, p. 128, pi. 26, 
figs. 31-34. 
Baulinas Bay, California, to Gulf of California. 
ISCHNOCHITON DECIPIENS Carpenter, 1892. 
Pilsbry, Man., vol. 14, p. 123. 
Catalina Island to Monterey, California. 
ISCHNOCHITON SINUDENTATUS Carpenter, 1892. 
Pilsbry, Man., vol. 14, p. 128. 
Monterey, California. 
ISCHNOCHITON ASTHENES Berry, 1919. 
Proc. Cal. Acad. Sci., ser. 4, vol. 9, No. 1, pi. 8 ; Lorquinia, Jan. 1919, p. 7. 
White’s Point, San Pedro, California (S. S. Berry). 
ISCHNOCHITON STEARNSII Dali, 1902. 
Proc. U. S. Nat. Mus., vol. 24, No. 1264, p. 557. 
Oft the Farallones Islands, California, in 391 fathoms. 
ISCHNOCHITON GOLISCHI Berry, 1919. 
Lorquinia, Jan., 1919, p. 7. 'v-rrt'JT. y 
Off Santa Monica, California, in 100 fathoms (S. S. Berry). 
