NEW STARFISHES FROM THE PACIFIC COAST 1 25 



are longer, the adambulacral armature and minor details of 

 paxilla? are different. 



Rays 5. 7?= 86 mm.; r = 9 mm. ; 7? = 9.5/-. Breadth of 

 ray at base, 10 to 11 mm. 



Rays long, narrow, pointed, very gently tapering, with a 

 slightly convex abactinal surface usually sunken along mid- 

 radial line. General form much flattened ; sides of rays 

 rounded ; inferomarginal plates narrow, not encroaching much 

 upon actinal area, but forming rather the margin of ray ; ambu- 

 lacral furrow wide and shallow ; tube feet long, in 2 series ; 

 actinal and marginal spines rather long and bristling, the ad- 

 ambulacral armature forming 2 series continuous with that of 

 inferomarginal plates; actinal intermediate plates usually with 

 a rather short, 2-jawed, blunt, papilliform pedicellaria. 



Abactinal paxilla? with a stellate crown ; those of supermar- 

 ginal series larger than rest, and each corresponding to an infero- 

 marginal plate, to upper end of which it is closely juxtaposed. 

 Crown of superomarginal paxilla longitudinally oval (as in 

 sarsi), the others subcircular. Adjacent to superomarginal 

 paxilla? are about 2 regular series of lateral abactinal paxilloe, 

 about 2 of which correspond to 1 superomarginal paxilla. 

 Paxillae diminish in size very rapidly toward median line of ray 

 and become less regular in arrangement as they approach it. 

 Superomarginal paxilla has slightly convex tabulum armed 

 with about 30 slender denticulate spinelets, of which about 10 

 are scattered on surface of tabulum and the remainder about 

 the periphery, the whole forming a diverging group. The 

 superomarginal and other lateral paxilla? sometimes have a 

 blunt 2-jawed pedicellaria similar to but larger than those scat- 

 tered over the midradial area (see below). The adjacent pax- 

 illae have about 12 peripheral and 3 to 5 central spinelets, while 

 those in midradial region have about 10 peripheral and 3 or 4 

 central, very much smaller, spinelets, the whole paxilla being 

 notably smaller. Many of small paxilla? of midradial area also 

 bear in center of tabulum, surrounded usually by a few small 

 peripheral spinelets, a small obovoid 2-jawed valvate pedicel- 

 laria, resembling a split granule. Viewed from above, the 

 pedicellaria is elliptical in shape when closed. Each jaw is 



