ON MOLLUSCA OF THE WEST COAST OF NORTH AMEUICA. 5' 5 



B.I.Cat, no. 



1738. YMia limatula, Say. Awatska Bay and Arctic Oc. Mud, common, 5-20 fm. 



1734. Naticadausa,^voA. . Awatska Bay. Mud, 5-15 fm. 



1735. Yoldia myalis (or hyperhorea). Awatska Bay. Mud, 10 fm. 



1736. Leda minuta. Seniavine Str. ; Arctic Oc, near Behr. Str. Mud and pebbly 



sand, 15-30 fm., coarse strise. 



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



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



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



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



1744. Admete arctica, Midd. Ditto. Mud, 30 fm. 



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



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



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



25 fin. 



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



1750. Trichotropis bicarinata. Ditto. Pebbly mud, 5-6 fm. 



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



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



1753. Velutina [Mormlial zonata [Gld. Inv. Mass.]. Ditto. On stones, 5 fm. 



1754. NtKula tenuis, Mont. Ditto. Mud, common, 20-30 fm. ; pebbly mud, 5-20 



fm. Also Hakodadi ; sandy mud, 10 fm. ; no. 1687. 



1756. TropJicm elathratus, Umi. Ditto. Mud, iO-30 fm. ; gravel, 4 fm. 



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



gravel, 4 fm. 



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



1759. Scalaria Grcenlandica, Chemn. Ditto. Mud, 30 fni. 



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



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



1762. Fatdla [Lepeta'] Candida, Couth. Ditto. Sj ud, 30 fm. 



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



1 765. Chrysodomu? Schantaricus, Midd. Ditto. Mud, 20-30 fm, 



1770. Astarte lactea, Br. and Sby. Ai-ctic Oe. Mud, 30 fm. 



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



1773. Bueeinum fundatum (probably bicarinate var. oi glaciah). Arctic Ocean. 



1774. Bueeinum fundatum, var. pelagica. Ai'ctic Ocean. 

 J.775, Buccimim ? Ochotense, Midd. Arctic Ocean. 



1776. Succinum angulosum. Gray {= glacials, var.). Arctic Ocean. 



1777. Bueeinum ? tenue. Gray. Arctic Ocean. 



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



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



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



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



1785. Trielwtropis insignis, Midd. Seniavine Str. Gravel, 10 fin. 



1789. Bela dectissata. Couth. Seniavine Str. Sandy mud, 10-20 fm. Also Awatska 



Bay ; no. 1730. 



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



1791. Bela harpularia. Couth. Pebbly mud, 5 fin. 



1793. Margarita hdieina, Fabr. Behring Str. Clean gravel and algae, 5 fin. 

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



1798, Jjunatia \Acryiid\ aperta, Lov. Kamtschatka. 



1799. Modiolaria nigra. Gray. Arctic Ocean. 



1821. Chama lobata [=exogyra, Jay, non Conr.]. China Sea, west of Formosa, 



SheU-gravel, 30 fin. 

 1836. Purpura emaryinata, Desh. San Francisco. On rocks in 4th level. 

 \BZ7 . I/itorina 2'iena, GYii. San Francisco. On rocks in 3rd and 4th levels, 



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

 18386. Acmcea patina, 'Each. San Fi-ancisco. On piles and rocks between tides. 



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



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

 184L CardiumNuttallii, Conr. San Fiancisco. Common in sandy mud, L w, 10 fin. 



71 . 



