ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 5 5 



S.I. Cat. no. 



1733. Yoldia Umatula, Say. Awatska Bay and Arctic Oc. Mud, common, 5-20 fm. 



1734. Nation clausa, Brod. Awatska Bay. Mud, 5-15 fm. 



1735. Yoldia myalis (or hyperborea). Awatska Bay. Mud, 10 fin. 



1730. Leda minuta. Seniavine Str. ; Arctic Oc., near Behr. Str. Mud and pebbly 



sand, 15-30 fm., coarse striae. 

 1737. Leda minuta, var. Ditto. Mud and pebbly sand, 5-20 fm., fine striae. 



1740. Modiolaria corrugata. Ditto. Mud, in nests, 30 fm. 



1741. Rhynchonella psittacea. Ditto. Gravel and sponges, 20-30 fm. 



1742. Margarita striata, Leach. Ditto. Shelly gravel, common, 15-30 fm, 



1744. Admete arctica, Midd. Ditto. Mud, 30 "fin. 



1745. Admete viridula, Couth. Ditto. Gravel, 4 fm. ; mud, 10-30 fm. 



1747. Velutina haliotoidea. Ditto. Gravel, 10-25 fm. 



1748. Margarita argentata [Gld. Inv. Mass.]. Ditto. Mud, 30 fm. ; shelly, 15- 



25 fm. 



1749. Turritella (sp.), Migh. Ditto. Mud, 30 fm. ; clean gravel, 4-20 fm. 



1750. Trichotropis bicarinata. Ditto. Pebbly mud, 5-G fm. 



1751. Lunatia pallida, Brod. Ditto. Mud, 10-30 fm. 



1752. CylicJma triticea, Couth. Ditto. Mud, 15-30 fm. 



1753. Velutina {Mornlia} zonata [Gld. Inv. Mass.]. Ditto. On stones, 5 fm. 



1754. Nucula tennis, Mont. Ditto. Mud, common, 20-30 fm. ; pebbly mud, 5-20 



fin. Also Hakodadi j sandy mud, 10 I'm. ; no. 1687. 



1756. Trophon clathratus, Linn. Ditto. Mud, :.'0-30 fm. ; gravel, 4 fm. 



1757. Lunatia septentrionalis, Beck. Ditto. Gravelly mud, common, 20 fm. ; 



gravel, 4 fm. 



1758. Amicula vestita, Sby. Ditto. Gravel, common, 10-40 fm. 



1759. Scalaria Grocnlandica, Chemn. Ditto. Mud, 30 fm. 



1760. Lunatia pallidoides. Ditto. Mud, 30 fm. 



1761. Chrysodomus Islandicus, Chemn. Ditto. Mud, 30 fm. 



1762. Patella \Lepeta~\ Candida, Couth. Ditto. Mud, 30 fm. 



1763. Chiton albus, Linn. Ditto. On shells in mud, 30 fm. 

 1765. Chrysodomus Schantaricus, Midd. Ditto. Mud, 20-30 fm. 



1770. Astarte lactea, Br. and Sby. Arctic Oc. Mud, 30 fm. 



1771. Pecten Islandicus, Chemn., var. Arctic Oc. Mud, 30 fm. 



1773. Buccinum ?undatum (probably bicarinate var. of glaciate}. Arctic Ocean. 



1774. Buccinum tundatum, var. pelagica. Arctic Ocean. 



1775. Buccinum ?Ochotense, Midd. Arctic Ocean. 



1776. Buccinum angulosum, Gray (= ylaciale, var.). Arctic Ocean. 



1777. Buccinum ? tenue, Gray. Arctic Ocean. 



1778. Mangclia, like simplex, Midd. Arctic Ocean. 



1781. Bela rufa, Mont. Seniavine Str. Pebbly mud, common, 5 fm. 



1783. Turritella erosa. Seniavine Sto Mud, 10-20 fm. 



1784. Lyonsia Norvegica, Chem. Seniavine Str. Pebbly mud, 5 fm. 



1785. Trichotropis imignis, Midd. Seniavine Str. Gravel, 10 fin. 



1789. Bela decussata, Couth. Seniavine Str. Sandy mud, 10-20 fni. Also Awatska 



Bay ; no. 1730. 



1790. Yoldia myalis, Couth. Seniavine Str. Mud, 10-20 fm. ; pebbly mud, 5 fni. 



1791. Bela harpidaria, Couth. Pebbly mud, 5 fm. 



1793. Margarita helicina, Fabr. Behring Str. Clean gravel and algse, 5 fm. 

 1796. Turtonia [? minuta, Fabr.]. Behring Str. Common on sponges, 20-40 fm. 



1798. Lunatia \_Acrybia~] aperta, Lov. Kamtschatka. 



1799. Modiolaria nigra, Gray. Arctic Ocean. 



1821. Chamalobata [ exogyra, Jay, non Conr.]. China Sea, west of Formosa, 



Shell- gravel, 30 fm. 

 18"36. Purpura emarginata, Desh. San Francisco. On rocks in 4th level. 



1837. Litorina plena, Gld. San Francisco. On rocks in 3rd and 4th levels. 



1838. Acmcea textilis, Gld. San Francisco. On piles and rocks between tides. 

 18386. Acmcea patina, E*ch. San Francisco. On piles and rocks between tides. 



1839. Cryptomya Californica, Conr. San Francisco. On sandy beaches. 



1840. Macoma nasuta, Conr. Sn Francisco. Common in sandy mud, 1. w. 10 fm. 



1841. CardiumNuttallii, Conr. San Francisco. Common in sandy mud, 1. w. 10 fin, 



71 



