ALASKA NEMERTEANS 5 



havoc with the nervous elements and with the connective tissues. 

 Specimens killed in strong alcohol proved valuable adjuncts 

 to the formalin preparations. In most cases the formalin speci- 

 mens have been eventually transferred to alcohol for permanent 

 preservation. Corrosive sublimate-acetic, Gilson's fluid, and, 

 for nervous elements, Flemming's solution are always to be 

 recommended. 



For serial sections no stains have given more happy results 

 than Delafield's hasmatoxylin, followed by Orange G. 



In the limited time at our disposal it was naturally impossible 

 to make an exhaustive collection or study of the Nemertean 

 fauna. Some thirty-two species were collected, however, and of 

 these twenty-seven proved to be new to science, and only two of 

 the remaining species have been recorded from the Pacific. 



LIST OF SPECIES HERE RECOGNIZED. 



Following is a list of the species recognized, with brief notes 

 on their general distribution so far as our collections go : 



PROTONEMERTEA. 



1 . Carinella speciosa sp. nov. Along the whole Pacific coast of 

 Alaska. Vancouver Island (Shearer). Not uncommon. 



2. C. dinema sp. nov. Victoria, B. C. ; Sitka. Uncommon. 



3. C. capistrata sp. nov. Prince William Sound. Common. 



MESONEMERTEA. 



4. Cephalothrix linearis (Rathke) Oersted. Pacific coast. Abun- 

 dant. 



5. Carinoma grijfini sp. nov. Collected by Mr. Creswell Shearer 

 at Albert Head, Vancouver Island. 



METANEMERTEA. 



6. Emplectonema gracile (Johnston) Verrill. Pacific coast. 

 Abundant. San Francisco (Stimpson). 



7. E. bilrgeri sp. nov. Glacier Bay ; Sitka. Not common. 



8. Zygonemertes thalassina sp. nov. Sitka. Not uncommon. 



9. Z. albida sp. nov. Victoria, B. C. Uncommon. 



10. Paranemertes peregrina gen. et sp. nov. Pacific coast. 

 Vancouver Island (Shearer). Abundant. 



1 1 . P. pallida sp. nov. Yakutat Bay ; Popof Island. Uncommon. 



