322 PROCEEDINGS OF THE ACADEMY OF [June, 



Alaska; by Mr. A. E. Mcllhenny at Point Barrow, Alaska, and by Mr. 

 George Dawson at Admiralty Inlet, Washington. From this source 

 are added 7 species not otherwise represented, 2 of them having been 

 described as new in these Proceedings for 1906, pp. 352-355. The 

 total number of species considered is, therefore, 114. 



After deducting the 43 new species, the 71 remaining may be classi- 

 fied from the point of view of geographical distribution as follows : 16, 

 so far as known, are confined to the region under consideration, having 

 been reported from some part of it, but not elsewhere, by previous 

 writers; 12 occur to the southward along the coast of California, though 

 most of them have already been recorded from Puget Sound or the 

 Gulf of Georgia by Johnson and others; 8 have been described as 

 occurring off the coast of Japan, and probably all of the latter have, 

 as several are known to have, a wide distribution throughout the 

 North Pacific; 4 are scattering; and the remaining 31 are well-known 

 inhabitants of northern Europe, Greenland and the Arctic regions 

 generall5^ Many of the latter are established circumpolar forms and 

 have been already reported by Marenzeller or Wiren as belonging to the 

 fauna of Bering Sea, or by others as occurring in the North Pacific. 



In not a few cases it is evident that the individuals referred to such 

 species differ in certain respects from their European representatives. 

 In a few species like TerebelUdes strcemii individuals of almost every 

 colony present certain characteristic differences. In the belief that the 

 future will show that such wide-ranging species split up into man)'- 

 geographical subspecies just as land animals do, and that such sub- 

 species cannot be satisfactorily discriminated until our knowledge of 

 the distribution and variation of annelids shall have been very greatly 

 augmented, it has been thought best to merely mention such differ- 

 ences, without giving to them nomenclatorial importance. 



In this report it has been thought sufficient to the purpose to record 

 only the general location of the stations, together with the depth of 

 water and the character of the bottom. The full data relating to each 

 station, including its exact location, have been carefully compiled by 

 Mr. Henry C. Fassett and published in the Report of the U. S. Fish 

 Commission for 1903, pp. 123 to 13S. 



Except in the two or three cases where it is stated otherwise, all 

 types have been forwarded to the U. S. National Museum. Cotypes, 

 whenever such exist, are deposited at the Academy of Natural Sciences 

 of Philadelphia. The references given under each species are either 

 to its original description or to later accounts fiu'iiished with good 

 figures and synonymies. 



