6 COE 



13. P. car7iea ST^.now. Pacific coast. Vancouver Island (Shearer). 

 Common. 



13. Amphiporus aiigulatiis (Fabrlcius) Verrill. Pacific coast. 

 Abundant. 



14. A. bifnaczclatzis sp. nov. Southeast coast. Uncommon. 

 Puget Sound (T. Kincaid). 



15. A. tigrinus sp. nov. Farragut Bay. Uncommon. 



16. A. tiebulostis sp. nov. Kukak Bay, Alaska Peninsula. Un- 

 common. 



17. A. leuciodiis sp. nov. Southeast coast. Common. 



18. A. exilis sp. nov. Pacific coast. Abundant. 



19. Tetrastem77ia bicolor sp. nov. Kadiak. Not common. 



20. T. aberrans sp. nov. Glacier Bay ; Prince William Sound. 

 Uncommon. 



21. T. cceczcjji sp. nov. Dredged by Dr. Ritter at Kadiak. Common. 



HETERONEMERTEA. 



22. Tcenlosoma princeps %\i. no\. Southeast coast. Uncommon. 

 33. Linens viridis (Fabricius) Verrill. Annette Island. Com- 

 mon. 



24. L. torquatiis sp. nov. Prince William Sound. Common. 



25. Micrura verrilli sp. nov. Prince William Sound. Not un- 

 common. 



26. jSI. alaskensis sp. nov. Southeast coast. Common. 



37. Cerebratulus herculeus sp. nov. Sitka. Not uncommon. 



28. C. marginattis Renier. Sitka. Not uncommon. 



29. C. occidentalis sp. nov. Yakutat ; Prince William Sound. 

 Vancouver Island (Shearer). Abundant. 



30. C. longiceps sp. nov. Yakutat. Uncommon. 



31. C. mofttgomeiyi sp. nov. Puget Sound to Unalaska Island. 

 Common. 



32. C. albifrons sp. nov. Near Sitka. One specimen. 



It must be remembered that the above list represents but a 

 few weeks' collecting, and sometimes with only a few hours 

 at a locality ; too much confidence therefore should not be 

 placed on the distribution or comparative abundance of the 

 various species. Further research will undoubtedly add greatly 

 to the number of species, and judging from the number found 

 in so short a time it seems not unlikely that the list may eventu- 

 ally be more than doubled. 



