ASTEROIDEA OF NOBTH PACIFIC AND ADJACENT WATERS — FISIIKR. 323 



Specimens examined. — One hundred and seven, from the following stations: 

 Specimens of Solaiter borealit examined. 



Locality. 



Depth. 



Nature of bottoni. 



28SS.. 

 2800.. 

 2871.. 

 2937.. 

 2980.. 

 3070.. 

 3071.. 

 3073.. 

 307S.. 

 312G.. 

 3227.. 

 3331.. 

 3337.. 

 333S.. 

 3343. 

 334G.. 

 3347.. 

 34S9. 

 30)1. 

 3607. 

 3C08. 



3070. 

 4415. 



East of Kadlak Island, Alaska. . . 

 South of Queen Charlotte Islands. 

 Off Gray's Harbor, Washington. . 



OdSan Dlcgo, California 



OH Anacapa Island, California 



00 Sea Lion Rock, Washington . 



.do. 



Monterey Bay, California 



Bering Sea north of Unalaska 



North of Unalaska 



South of Unlmak, Alaska 



South of Shuinagin Islands, Alaska . . . 

 Oil Destruction Island, Washington. 

 OS Tillamook Bay, Oregon 



blue mud, gravel.. 



green mud 



brown ooio 



grven mud 



I mud 



green mud . 



I do 



' do 



.do. 



.do. 



Bering Sea, west of Pribilof Islands.. . 

 Bering Sea, south of Pribilof Islands. 



North of Unalaska 



Bering Sea, between Pribilof Islands 



and Unalaska. 



Monterey Bay, California 



Between Santa Catalina and Santa 



Barbara Islands, California. 

 Between Santa Barbara and San 



Nicholas Islands, California. 

 ....do 



mud 



green mud, gray sand 



green mud 



green mud, black lava sand, 

 gray sand 



green mud sand, 

 green mud 



V. & Nat. Mm. 



Do. 



Do. 

 Do. 



Do. 

 Do. 



Do. 

 Do. 



Do. 

 Attntiou, ig04. 



545-800 soft gray mud. 



Remarks. — The differences between horealis and Tiypothrissus will be found 

 below under that species. 



The species to wliich horealis (and especially the Californian form) shows tlie 

 greatest resemblance is Perricr's Crossaster australis from the Straits of Ma<rellan. 

 The differences are evidently not fj^eat and it is not at all improbable tiiat tiie 

 ranges of the two will some day be found to run together. Tiie west coast of 

 South America is not as yet well worked in tleep water. Crossaster nephini Bell 

 may be a link in this chain. Solaster australis" differs in having a single papida', 

 not several, in each mesh of the skeleton, especially on disk; in iiaving a series of 

 suboral spines (us in hypothrissus); and in having less prominent marginal plates 

 with shorter spines. There seem to be differences in the ])axilla>, judging by 

 Perrier's figure, but it is perhaps not safe to make comparisons without specimens. 

 Australis has nine or ten rays wiiich are about as slender as in Californian specimens 

 of horealis though longer (R = 3.25 r). 



Solaster regularis Sladen, collected by the ChaUenger in IT.") fathoms, south of 

 Wellington Island, off Chile Gat. 50° OS' 30" S.), is another closely relatetl species, 



"See Ludwig, Zeitachr. fOr wiw. Zotil., vol. 82, 1905, p. 65. 

 fcrerrier, Miss. eci. Cap Hum, ISfll, p. 115, pi. 10, fig. \c. 



