NOETHWEST COAST MAEINE SHELLBEAKING MOLLUSKS. 189 
Section BASILIOCHITON Berry, 1918. 
LEPIDOCHITONA FLECTENS Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 649; Proc. Acad. Nat. Sci. Phila., 1865, p. 
90. — PiLSBRY, Man., vol. 15, pi. 15, figs. 34-37. 
Vancouver Island to San Diego, California. 
LEPIDOCHITONA FLECTENS HEATHII Berry, 1911. 
Proc. Acad. Nat. Sci. Phila., p. 487, pi. 40, text figs. 1-7. 
Monterey to San Pedro, California. 
Section CYANOPLAX Pilshry, 1892. 
LEPIDOCHITONA HARTWEGII Carpenter, 1855. 
Proc. Zool. Soc., p. 231. — Pilsbry, Man., vol. 14, p. 45, pi. 14, figs. 81-85. 
Forrester Island, Alaska, to the Gulf of California. 
LEPIDOCHITONA HARTWEGII NUTTALLI Carpenter, 1855. 
Proc. Zool. Soc., p. 231. — Pilsbry, Man., vol. 14, p. 46. 
Straits of Fuca to Turtle Bay, Lower California. 
LEPIDOCHITONA RAYMONDI Pilsbry, 1894. 
Nautilus, vol. 8, No. 4, p. 46. 
? Seward, Alaska, to San Pedro, California, ^ 
LEPIDOCHITONA FACKENTHALLAE Berry, 1919. 
Lorquinia, Jan, 1919, p. 5. 
Pacific Grove, Monterey Bay. ( S. S. Berry. ) 
LEPIDOCHITONA LOWEI Pilsbry, 1918. 
Nautilus, vol. 31, No. 4, p. 127. 
San Pedro, California. 
Subgeiius Spongioradsia Pilsbry,. 1893. 
SPONGIORADSIA ALEUTICA Dali, 1878. 
Proc. U. S. Nat. Mus., vol. 1, p. 1. — Pilsbry, Man., vol. 15, p. 65, pi. 15, 
figs. 30-33. 
Aleutian Islands. 
Genus SCHIZOPLAX Dali, 1878. 
SCHIZOPLAX BRANDTII Middendorflf, 1846. 
Bull. Acad. Sci. St. Petersburg, vol. 6, p. 117. — Pilsbry, Man., vol. 14, pi. 
11, figs. 32-37. 
Shantar Bay, Okhotsk Sea; Bering, Pribilof, and Aleutian Islands, and 
south to Cape Fox, Alaska. 
SCHIZOPLAX MULTICOLOR Dali, 1920. 
Nautilus, vol. 34, No. 1, July, 1920, p. 22. 
Bering Sea. 
Genus NUTTALLINA Carpenter, 1873. 
NUTTALLINA CALIFORNICA Reeve, 1847. 
Reeve, Conch. Icon., Chiton, pi. 16, fig. 89. — Pilsbry, Man., vol. 14, pi. 54, 
figs. 23, 24 ; pi. 56, figs. 12-18. 
Straits of Fuca to San Diego, California. 
167980— 20— Bull. 112 13 
