l8o BUSH 



i6. Eudistylia ahbrcviata sp. nov. Yakutat to Sitka. 



17. Chone teres sp. nov. Unalaska Island. 



18. Myxicola conjiincta sp. nov. Prince William Sound. 



19. Myxicola glacialis sp. nov. Unalaska Island. 



20. Serptila splcndcns sp. nov. Prince William Sound. 



21. Crucigcra formosa sp. nov. Unalaska Island to Wrangel. 



22. CViia'gcra irregularis sp. nov. Juneau. 



23. Hyalopomatopsis occidcntalis sp. nov. Prince William 



Sound. 



24. Spirorbis semidentatiis sp. nov. Unalaska Island to 



Sitka. 



25. Spirorhis variabilis sp. nov. Sitka. 



26. Spirorbis fnorchi Levinsen. Prince William Sound to 



Sitka ; also North Atlantic. 



27. Spirorbis incoiigrtius sp. nov. Prince William Sound. 



28. Spirorbis quadrangular is Stimpson. Prince William 



Sound ; also North Atlantic. 



29. Spirorbis lincalus sp. nov. Prince William Sound. 



30. Spirorbis similis sp. nov. Pnnce William Sound. 



31. Spirorbis violaceus Levinsen. Prince William Sound 



to Sitka ; also North Atlantic. 



32. Spirorbis spirillum Linne. Loc. ? to Santa Barbara, 



California ; also North Atlantic. 



33. Spirorbis rugatus sp. nov. Sitka. 



34. Spirorbis asperatus sp. nov. Prince William Sound to 



Pacific Grove, California. 



35. Spirorbis abnortnis sp. nov. Sitka. 



Puget Sound Region : 



36. Eudistylia tcnella sp. nov. Vancouver Island, British 



Columbia. 



California, Pacific Grove : 



37. Parasabclla sp. 



38. Pscudopotamilla dcbilis sp. nov. 



39. Eudistylia intci'rnedia sp. nov. 



40. JMctachone mollis sp. nov. 



41. ]\Iyxicola affinis sp. nov. 



42. Protula atypha sp. nov. 



43. Euponiatus gracilis s-p. nov. 



44. Spirorbis eximius sp. nov. 



45. Spirorbis comptus sp. nov. 



Mexico : 



46. Eupomatus humilis sp. nov. 



