ASTEEOIDEA OF NORTH PACIFIC AND ADJACENT WATERS FISHER. 



15 



3. Ten Caupornian species are of still wider range, extending to the vicinity of Kauiak 

 Island (*) or to Bering Sea (t). Solaster borealis ranges to Japan. They are as follows: 



Nearchaster adculosus.' 

 Mediaster sequalis.* 

 Ceramaster clarM.'f 

 Eippasteria spinosa.* 

 Henricia leviuscula.'\ 



Henricia aspera.^ 

 Henricia asthenadis.^ 

 Solaster horealis.] 

 Peribolaster hisfrialis. f 

 Ilymenaster per%ssonotus.'\ 



4. Three other Californian species which range little if any south of Monterey Bay 

 extend to Sitka (*) or the Asiatic region (t), as follows: 



Leptij chaster anomalus.^ 

 Derjna-sterias imbricata.* 



Solaster daivsoni.j 



In the above lists there are thirty-three species which do not reach the coast of 

 Asia and are distinctive West American forms. 



Considering the more northern forms, there are twenty-eight species which do 

 not reach Cahfornia, and of these twenty do not extend their range to the Asiatic 

 coast or outlying islands, making with the above thirty-three species, fifty-three 

 characteristic west coast forms, not found on the Asiatic side. 



5. Of the twenty-eight species which do not range south of Oregon, nine are confined 

 TO the region of the Aleutians and Bering Sea, two of them ranging as far west as the 

 Commander Islands (*), as follows: 



Dipsacaster borealis. 

 Nearchaster pedicellaris. 

 Ceramaster arcticus.* 

 Cladaster validus. 

 Henricia longispina aleutica. 



Solaster hypotJirissus. 

 Pteraster marsippus* 

 Pteraster temnocJtiton. 

 Hynfiena-ster TcoMeri. 



6. The remaining nineteen species are pound in the region between Kamchatka and 

 Oregon, but those marked with an asterisk (*) are wide ranging forms which reach Japan. 

 Those marked ** reach Bering Sea, and those indicated with a t extend to the Asiatic 



COAST or outlying ISLANDS. 



Leptychaster pacificus.** 

 Dipsacaster hetmopliilus. 

 Benthopecten claiiger.** 

 Bentliopecten mutabilis. 

 Luidiaster dawsoni.'f 

 Nearchaster variabilis.** 

 Gephyreaster sunfti. 

 Pseudarchaster parelii alascensis. 

 Pseudarchaster dissonus.** 

 Ceramaster japonicus.* 



Hippasteria heathi. 

 Henricia spiculifera. 

 Henricia longispina. 

 Henricia leviuscula multispina. 

 Solaster stimpsoni. t 

 SolaMer paxillatus.* 

 Pteraster muUispinus. 

 Pteraster gracilis. 

 Pteraster tesselatv^.^ 



