90 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



5. Micrura pardalis , sp. nov. Pacific Grove, California. 



6. AI. oUvaris, sp. nov. Pacific Grove, California, low water ; off San 

 Francisco, California, 68 fms. 



7. M. griffini, sp. nov. San Pedro, California. 



8. M. nebulosa, sp. nov. South of Alaska Peninsula, 483 fms. 



9. Cerehratuhis signatus, sp. nov. Bering Sea, 61 fms. 



10. C. lineolatus, sp. nov. Southern California. 



11. C. californiensls, sp. nov. Southern California, low water to 28 fms. 



12. C. latus, sp. nov. Off central California to Bering Sea, low water 

 to 13.5 fms. 



HOPLONEMERTEA. 



13. Emplectonema purpuratum, sp. nov. Adahk Island, Alaska. 



14. Zygonemertes virescens (Verrill) Montgomery. Coast of California j 

 eastern coast of United States. 



1.5. Amphiporus similis, sp. nov. Monterey Bay, California. 



16. A. punctatulus, sp. nov. Catalina Island, California, surface. 



17. .4. gelatinosus, sp. nov. Southwest of Kadiak Island, Alaska, 159 

 fms. 



18. A. californ'wus, sp. nov. San Pedro and San Diego, California, low 

 water to 50 fms. 



19. .4. macracanthus, sp. nov. Arctic Ocean at Cape Sm>i;h and Wain- 

 wright Inlet, Alaska. 



20. A. pacijicus, sp. nov. Off central California to Bering Sea, 47 to 

 97 fms. (Gulf of California?) 



21. A. occidentalis, sp. nov. Off Washington, 40 to 97 fms. 



22. A. rubellus, sp. nov. Off San Pedro, California, 20 to 50 fms. 



23. A.flavescens, sp. nov. Coast of California. 



24. .4. leptacanthus, sp. nov. Off San Pedro, California. 



25. A.fulvus, sp. nov. Southern California. 



26. Drepanoplioru>( rlfferi, sp. nov. Off' southern California, 50 to 150 

 fms. 



27. Tetrastemrna alhidum, sp. nov. Coast of California. 



28. Planktoneviertes agassizUy^oodiwoYth.. Surface in equatorial regions 

 between 79 " and 90 ° W. Long. 



Bdellonemerte A . 



29. Malacohdella sp. Pacific Grove, California. 



The fact that 11 of these 29 species belong to the genus Amphi- 

 porus indicates the great abundance of forms and diversity of 

 structure which this genus has developed on the Pacific coast. Of 



