ALASKA NEMERTEANS 3 



Of the abundance of Nemerteans collected, colored drawings 

 were made of most of the species, and many specimens were 

 carefully preserved for anatomical study, and have proved most 

 interesting. Serial sections of most of the species have been 

 prepared, and details of their anatomy will be found on subse- 

 quent pages. 



Two other members of the expedition, Prof. William E. 

 Ritter, of the University of California, and Prof. Trevor Kin- 

 caid, of the University of Washington, have generously sub- 

 mitted to me the Nemerteans collected by them. 



SPECIES PREVIOUSLY RECORDED. 



The Nemertean fauna of the northwest coast of North America 

 up to the present time has been almost entirely neglected. 

 Several small collections have been made, but the only litera- 

 ture relating to the group in this region seems to be a paper by 

 Stimpson. This author 1 gives brief Latin diagnoses of the 

 following species from the west coast of North America : 



Emplectonema virtde Stimpson [= Nemertes gracilis John- 

 ston = Emplectonema gracilis Verrill]. Found by Stimpson 

 under stones between tides in San Francisco harbor. This spe- 

 cies occurs abundantly along the whole Pacific coast of Alaska. 



Cosmocephala beringiana Stimpson [= Amphiporus angu- 

 latus\ . Found in Bering Strait in five fathoms. This species 

 also is abundant along the whole Pacific coast of Alaska. 



Cerebratulus impressus Stimpson [ = Micrura tmpressa] . 

 Found in twenty fathoms in Bering Strait. This species was 

 not met with by the Harriman Expedition. 



The investigation of the systematic position and anatomy of 

 this group of worms has been rendered much less difficult since 

 the publication of Burger's excellent monograph on the Nemer- 

 teans of the Gulf of Naples. 2 Burger's classification is found to 

 be admirable, and his nomenclature has been closely followed in 

 the present work. It will be impossible, however, to retain the 

 generic names Eunemertes and Eupolia which Burger adopts, 

 for the reason that they have been antedated by Stimpson. In 



. Acad. Nat. Sci. Philadelphia, pp. 159-165, 1857. 

 2 Fauna und Flora des Golfes von Neapel. Monogr., 22, 1895. 



