\- .idii iv II i< \\i> U)J li 



( ••!■ he |ni'\ alenl color ni 1 tops 



tmall spines, whitish; adjacent rufTs of small cros • 

 ate pedicellariae rich aster purple or pansy purple, this ares widening as tl 

 papulae are contracted. When the papulae axe fully extended the animal i 

 when contracted, the aster purple predominates This color extern 

 Tube feet, pale yellow 

 Another less common phase vinaceoua rufo culated 



iferous ridges, paler below Someti - varied with orange rufo 



Another less common phase madder brown, papular very 'lark marooi 

 11 extending to furrow; tube feet, pale yellow 



Specimens from Union Bay, Bayne Sound, British Columbia, are labeled 

 pie." 

 \ specimen from Boundary Bay, British Columbia, intermediate betw 

 tmen figured (pi Bl, fig I and the sitkan example ol 



violel «nli while Bpinee !■' W Weymouth 

 /' In the list of lo n will be seen thai this form i- pra 



confined t<> the quiet bays and sounds of Washington, British < Columbia, and 

 Alaska It is difficult t<> escape the inference that the characteristic -mall Bpini 

 of the abactinal area are correlated with quiet water, hut that this is not the 



evidenced by the p along with of forma » and 



. the latter found on ..pen coasts ami also in deep water (Monterey B 

 There i- nothing approaching a -harp line of distinction between <x and 



Tij; Cat No 1275 U.S N M . Puget Sound (Simeahro 



Wash 



l,.rm« SOI. II I HI - \rrtlll 



7; Plate 78 Fig ire S . P 



I bbb, Ann 1. 17, 192 



Abactinal spines -tout, globose, or depressed-globose, finely ban 



in forma pi !■•. fig. ">■• and congregated in well separated convex 



or heaps, three or four to a dozen unequal or suhequal tuheivle- to M group. In the 

 ■r of the disk there i- usually n well defined stellate palisade of spines sur: 



ip of tubercles and from the points of the Mar a carina] series of tubei 

 'i extend- half the length of tin' ray hut as often i- entirely absent, or rep- 



here and there I.V unequal tllhercle- The Spaces between the gTOUpS of tllhci 

 are Usually I'll ti rely free from -pun-, or in intermediate forms have more 01 less 



lat ion at base of ray and more complete isolation ami prominence of the groups distallv. 

 The ai tinal Burface i- similar to that of forma 



1 osed pedicellariae (pi similar in form to those of , 



'■r hut a little larger. Form:. Monterey, 0.30 t«' 0.36 mm ; I 



.a. 0.31 mm. Forma oehrac* ■ . Monterey to Sitka 0.27 mm some i 

 25 mm 

 Straight pedicellariae: .1 The furcate type resemble tl 



somewhat in abundance On a specimen No 18146 from Puget Sound. 



Tacoma, they are much more abundant than ti 



