﻿ACADEMY 
  OF 
  SCIENCES. 
  249 
  

  

  9. 
  Cyrtodwia 
  siliqua, 
  Blainv. 
  ; 
  Plover 
  Bay 
  ; 
  Norton 
  Sound 
  ; 
  south 
  to 
  

   Aleutians; 
  D. 
  

  

  10. 
  Corbula 
  gibbosa, 
  Bred. 
  ; 
  Icy 
  Cape 
  ( 
  ? 
  ) 
  ; 
  B. 
  

  

  11. 
  Lyonsia 
  norvegica, 
  Chemn. 
  ', 
  Arctic 
  Ocean; 
  S. 
  

  

  12. 
  Lyonsia 
  flabellata, 
  * 
  G\d,; 
  Arctic 
  Ocean 
  ; 
  S. 
  

  

  13. 
  Siliqua 
  media, 
  Dall 
  ex 
  Gray 
  ; 
  Cape 
  Espenberg, 
  S. 
  ; 
  Norton 
  Sound, 
  D. 
  

   (S. 
  borealis, 
  Conr. 
  ; 
  and 
  costata, 
  Midd. 
  non 
  Say, 
  pars.). 
  

  

  14. 
  Tellina 
  alternidentata, 
  Brod. 
  ; 
  Icy 
  Cape, 
  B. 
  ; 
  Cape 
  Espenberg, 
  S 
  

   Avatcha 
  Bay 
  ; 
  Aleutians, 
  D. 
  ; 
  south 
  to 
  Sakalin 
  Id., 
  Schrenck, 
  ( 
  Tl. 
  utca 
  ; 
  

   Gray; 
  GuilfordicB, 
  Grsiy 
  ; 
  venulosa, 
  Schv.). 
  

  

  15. 
  Macoma 
  nasuia, 
  Conr.; 
  Plover 
  Bay, 
  D.; 
  south 
  to 
  Monterey, 
  Cal. 
  ; 
  D. 
  

  

  16. 
  Macoma 
  edentula, 
  Brod.; 
  Bering 
  Strait, 
  B. 
  ; 
  Aleutians, 
  D. 
  ; 
  south 
  

   to 
  Oregon, 
  D. 
  

  

  17. 
  Macoma 
  inconspicua, 
  Brod.; 
  Icy 
  Cape, 
  W. 
  B. 
  ; 
  Grantley 
  Harbor, 
  

   S.; 
  Plover 
  Bay; 
  Norton 
  Sound 
  ; 
  Aleutians, 
  D. 
  

  

  18. 
  31acoma 
  proxima, 
  Brown 
  ; 
  Arctic 
  Ocean, 
  B. 
  ; 
  Norton 
  Sound; 
  Aleu- 
  

   tians, 
  D. 
  

  

  19. 
  Standellafalcata, 
  Gld. 
  ; 
  Cape 
  Espenberg, 
  S. 
  ; 
  Aleutians 
  ; 
  and 
  south 
  to 
  

   California 
  ; 
  D. 
  

  

  20. 
  Liocyma 
  jluctuosa, 
  Dall 
  ex 
  Gld.; 
  Ochotsk 
  Sea, 
  Midd.; 
  Aleutians, 
  D. 
  

  

  21. 
  Liocyma 
  Beckii, 
  Dall 
  ; 
  Plover 
  Bay, 
  D. 
  

  

  22. 
  Liocyma 
  viridis, 
  Dall 
  ; 
  Arctic 
  Ocean, 
  St. 
  

  

  23. 
  Liocyma 
  arctica, 
  Rve.; 
  Arctic 
  Ocean 
  (ubi 
  ?). 
  

  

  24. 
  Astarte 
  semisulcata, 
  Leach 
  {teste 
  Stm.) 
  ; 
  Plover 
  Bay; 
  Norton 
  Sound; 
  

   Aleutians 
  ; 
  Avatcha 
  Bay, 
  D. 
  ; 
  Cape 
  Espenberg, 
  S. 
  ; 
  Icy 
  Cape, 
  B. 
  ; 
  {A. 
  lactea, 
  

   Brod.; 
  crassidens, 
  Brod., 
  Voy. 
  Bios.). 
  

  

  25. 
  Astarte 
  Banksii, 
  Gray 
  ; 
  Norton 
  Sound 
  ; 
  Plover 
  Bay 
  ; 
  Aleutians, 
  D. 
  ; 
  

   Arctic 
  Ocean, 
  B. 
  

  

  26. 
  Astarte 
  striata, 
  Gray 
  ; 
  Arctic 
  Ocean, 
  B. 
  

  

  27. 
  Venericardia 
  borealis, 
  Conr. 
  ; 
  Plover 
  Bay 
  ; 
  Norton 
  Sound 
  ; 
  Aleutians, 
  

   D. 
  ; 
  Arctic 
  Ocean, 
  St. 
  ; 
  south 
  to 
  Catalina 
  Island, 
  Cal., 
  Cooper. 
  

  

  28. 
  Cardium 
  islandicum, 
  Chemn. 
  ; 
  Cape 
  Espenberg, 
  S. 
  ; 
  Norton 
  Sound 
  ; 
  

   Aleutians 
  ; 
  south 
  to 
  Sitka, 
  D. 
  

  

  29. 
  Cardium 
  boreale, 
  * 
  Brod.; 
  Icy 
  Cape, 
  B. 
  

  

  30. 
  Serripes 
  gronlandicum, 
  Chemn.; 
  Icy 
  Cape, 
  B. 
  W. 
  ; 
  Cape 
  Espenberg 
  ; 
  

   Grantley 
  Harbor, 
  S. 
  ; 
  Plover 
  Bay 
  ; 
  Norton 
  Sound; 
  Aleutians; 
  south 
  to 
  Ore- 
  

   gon, 
  D. 
  

  

  31. 
  Serripes 
  Laperousii, 
  Desh. 
  ; 
  Plover 
  Bay 
  ; 
  Avatcha 
  Bay 
  ; 
  Aleutians 
  ; 
  

   Kadiak 
  ; 
  Sitka, 
  D. 
  

  

  32. 
  Lucina 
  borealis, 
  Lin. 
  ; 
  Aleutians 
  ; 
  Sitka 
  ; 
  Catalina 
  Id., 
  D. 
  ; 
  probably 
  

   arctic 
  also. 
  

  

  33. 
  Turtonia 
  occidentalis, 
  Dall 
  ; 
  Plover 
  Bay, 
  D. 
  

  

  34. 
  Mytilus 
  edulis, 
  Lin. 
  ; 
  Cape 
  Espenberg, 
  S. 
  ; 
  mouth 
  of 
  the 
  Mackenzie 
  

   River 
  ; 
  McFarlane 
  (whole 
  Arctic 
  Ocean 
  probably). 
  

  

  35. 
  Modiola 
  modiolus, 
  Lm.; 
  Plover 
  Bay; 
  Aleutians; 
  south 
  to 
  Monterey, 
  

   Cal.; 
  D. 
  

  

  