196 BULLETIN 112, UNITED STATES NATIONAL MUSEUM. 
MOPALIA CIRRATA Berry. 1919. 
Lorquinia, Jan., 1919, p. 5. 
Dundas Bay, Alaska. (S. S. Berry.) 
MOPALIA IMPORCATA Carpenter, 1864. 
Suppl. Rep. Brit. Assoc., p. 648. — Pilsbky, Man., vol. 14, p. 301, pi. 62, fig. 98. 
Forrester Island, Alaska, to San Pedro, California. 
MOPALIA IMPORCATA LIONOTUS Pilsbry, 1918. 
Nautilus, vol. 31, No. 4, p. 126. 
San Pedro and White’s Point, California. 
MOPALIA EGRETTA Berry, 1919. 
Proc. Cal. Acad. Sci., ser. 4, vol. 9, No. 1, p. 13, pis. 6, 7. 
Forrester Island, Alaska, in 20 fathoms. 
MOPALIA SINUATA Carpenter, 1864. 
Suppl. Kept. Brit, Assoc., p. 648. — Pilsbry, Man., vol. 14, p. 303, pi. 62, figs. 
95-97. 
Forrester Island to San Francisco, California. 
MOPALIA PHORMINX Berry, 1919. 
Proc. Cal. Acad. Sci., ser. 4, vol. 9, No. 1, p. 10, pis. 3, 4, 5. 
Off Point Pinos, California. (S. S. Berry.) 
MOPALIA LOWEI Pilsbry, 1918. 
Nautilus, vol. 31, No. 4, p. 125. 
San Pedro, California. 
MOPALIA HEATHI Pilsbry, 1898. 
Proc. Acad. Nat. Sci. Phila., p. 288. 
Monterey, California. 
MOPALIA CHLORIS Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 55, p. 513. 
San Diego, California. 
MOPALIA CHACEI Berry, 1919. 
Lorquinia, Jan., 1919, p. 6. 
La Jolla, California. (S. S. Berry.) 
MOPALIA GONIURA Dali, 1919. 
Proc. U. S. Nat Mus., vol. 55, p. 513. 
Granite Cove, Port Althorp, Alaska, to Puget Sound. 
MOPALIA CELETOIDES Dali, 1919. 
Proc. U. S. Nat. Mus., vol. 55, p. 514. 
Forrester Island, Alaska. 
Genus PLACIPHORELLA Carpenter, 1878. 
PLACIPHORELLA BOREALIS Pilsbry, 1892. 
Man., vol. 14, p. 309, pi. 66, figs. 14-17. 
Bering Sea and Island, 283 fathoms ; also ICuril Islands. 
PLACIPHORELLA VELATA Carpenter, 1878. 
Proc. U. S. Nat. Mus., vol. 1, pp. 298, 303, 307 ; pi. 2, fig. 36 . — Pilsbry, Mam, 
vol. 14, p. 306, pi. 66, figs. 6-12. 
Trinidad, California, to Todos Santos Bay, Lower California. 
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