30 Ptib. Puget Sound Biol. Sta. Vol. 2, No, 33 



large, with many pseiidopaxillae ; adambulacral spines 2 in a groove, trans- 

 verse rows of graded spines 6 to 8 and the 2 inner longer and stouter. — 

 Not numerous, in deep water. 



2. Solaster stimpsoni Verrill. 



} Asterias decemradiaius Brandt; ? Solaster decemradiaUis Stimpson ; 

 Solaster varicouverensis De Loriol. 



RaA'S 9 or 10, rounded, rather long; disk medium. Dorsal ossicles 

 closely united ; pseudopaxillae composed of stellate clusters of small blunt 

 divergent webbed spinules, larger than those of S. galaxides; upper mar- 

 ginals indistinct ; lower marginals smaller and less prominent than in 

 »S'. galaxides, spinules in transverse groups ; adambulacral plates with 2 

 spines inside and a transverse simple row of 6 or 8 longer webbed spines. — 

 Rather numerous, in deep water. 



3. Solaster dawsoni Verrill. 



Rays 12 or 13, tapering rapidly; disk rather broad. Dorsal plates 

 lobed, closely over-lapping; dorsal pseudopaxillae larger than those of 

 S. galaxides and S. stimpsoni, crowded with small slender spinules ; spin- 

 ules webbed together ; papular areas small ; papulae small ; upper marginals 

 well developed ; pseudopaxillae rounded, larger than dorsals, bearing stel- 

 late groups of spinules ; lower marginals large and prominent, transversely 

 oblong, with many spinules; marginal rows close together; interradial spaces 

 very narrow ; interactinal rows very short ; spines of adambulacral furrow 

 4 or 5, long, slender, webbed ; transverse spines long, slender, subequal ; 

 oral spines long. — Rather numerous, in deep water. 



Genus Crossaster 



Rays variable in number, 10 to 12; disk broad. Dorsal skeleton 

 feebly developed, flexible ; ossicles slender, openly reticulated, leaving 

 many large papular areas ; dorsal and marginal plates bearing elongated 

 pseudopaxillae with many spinules clustered in brush form, the central 

 ones longest ; upper marginal plates feebly developed ; lower marginals 

 much larger and with large pencils of spinules; actinal plates few, some- 

 times lacking; adambulacral spines form a furrow series of 3 to 5 to a 

 plate and an exterior transverse comb of longer webbed spines. 



). Crossaster papposus (Linnaeus) Miiller & Troschel. Rose Star. 



Asterias papposa Linne; Solaster papposus Forbes; Asterias a finis 

 Brandt. 



Rays usually 11. As described in the genus. Conspicuous on account 

 of large elevated conical tufts of slender elongated spinules which are 

 more or less divergent. Actinal spinules mostly lacking; interradial spaces 



