188 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
HANLBYA HANLEYI SPICATA Berry, 1919. 
Proc. Cal. Acad. Sci., ser. 4, vol. 9, No. 1, p. 8, figs. 5, 6. 
Monterey, California. 
Superfamily MESOPLACOPHORA. 
Family LEPIDOCHITONIDAE. 
Genus LEPIDOCHITONA Gray, 1821. 
Section TONICELIA Carpenter, 1873. 
LEPIDOCHITONA MARMOREA Fabricius, 1780. 
Fauna Gronl., p. 420. — Pilsbey, Man., pi. 10, figs. 8-15. 
Circumboreal. Arctic and Bering Seas; Aleutian Islands south to Forrester 
Island, Alaska. Also Japan. 
LEPIDOCHITONA SUBMARMOREA Middendorff, 1846. 
Bull. Acad. Sci. St. Petersburg, vol. 6, No. 8, p. 120 ; Sibirische Reise, p. 178, 
pi. 14, figs. 7, 10 ; pi. 15, figs. 7, 8. 
Aleutian Islands to Puget Sound. Also the Okhotsk Sea and Japan. 
LEPIDOCHITONA SITKENSIS Middendorff, 1846. 
Bull. Acad. Sci. St. Petersburg, vol. 6, p. 121 ; Mai. Rossica, pi. 13, figs. 1, 2. 
Sitka, Alaska. 
LEPIDOCHITONA LINEATA Wood, 1815. 
General Conch., p. 15, pi. 2, figs. 4, 5. 
On the west, the Okhotsk Sea and northern Japan. On the east, from the 
Aleutian Islands to San Diego, California. 
LEPIDOCHITONA RUBER Linnaeus, 1767. 
Syst. Nat., ed. 12, p. 1107. — Pilsbey, Man., vol. 14, pi. 7, figs. 50-56; vol. 15, 
pi. 15, fig. 25. 
Circumboreal. Arctic Ocean to Monterey, California. 
LEPIDOCHITONA SACCHARINA Dali, 1878. 
Proc. U. S. Nat. Mus., vol. 1, p. 2. — Pilsbey, Man., vol. 14, p. 44; vol. 15. 
p. 66, pi. 15, figs. 22-24. 
Pribilof, Bering, and Aleutian Islands, in shallow water. San Diego, Cali- 
fornia, in 101 fathoms. 
Section LEPIDOCHITONA s. s. 
LEPIDOCHITONA DENTIENS Gould, 1846. 
Proc. Boston Soc. Nat. Hist., vol. 2, p. 145 ; Rep. U. S. Expl. Exp. Moll., fig. 
433. — Pilsbey, Man., vol. 15, pi. 15, fig. 26. 
Puget Sound to Magdalena Bay, and Socorro Island. 
LEPIDOCHITONA ALBA Linnaeus, 1767. 
Syst. Nat., ed. 12, p. 1107, — Pilsbey, Man., vol. 14, p. 70, pi. 7, figs. 35-38. 
Circumboreal. Arctic Ocean to San Diego, California. 
LEPIDOCHITONA SHARPEI Pilsbry, 1896. 
Nautilus, vol. 10, No. 5, p. 50. 
Unalaska, Aleutian Islands. 
