124 



COE 



Although such a large proportion of the species are peculiar 

 to the Pacific coast, yet in general they belong to common 

 European genera, and the Nemertean fauna as a whole resem- 

 bles that of Europe and the Mediterranean far more closely 

 than it does that of the Atlantic coast of North America. 

 This has been observed in regard to the general invertebrate 

 fauna of Puget Sound by Harrington and Griffin, 1 and Griffin 

 noted the same in regard to the Nemerteans. The abundance 

 of species of Carinetta, the presence of Nemertopsis and of 

 Emplectonema gracilc, and the close resemblance of a number 

 of species of Tctrastemma, Amphiporus, Lincus, Micrura and 

 Cerebratulus to closely related European forms, are instances of 

 this similarity of faunas. 



Certain other collections which are being studied will doubt- 

 less yield further light on the distribution of the species and 

 their relationships, as well as the resemblance of the Nemertean 

 fauna of the Pacific coast to that of other parts of the world. 



The distribution of Nemerteans on the Pacific coast of North 

 America so far as now known is represented in the following table : 



KUMBER OF SPECIES KNOWN FROM VARIOUS LOCALITIES ON THE 



PACIFIC COAST 



l Trans. New York Acad. Sci., p. 161, 1897. 



