PLATE LXXXI. 



Fig. I. Distolasterias chelifera Verrill. Type. Dermal major pedicellariae ; 

 a, b, c, d, are elongate, strongly unguiculate forms ; e is a stouter 

 form, and not unguiculate ; X 28. No. 1346, Mus. Comp. Zool. 



Fig. 10. The same specimen. One of the dorsal spines bearing a wreath of 

 minor pedicellariae, P, P; X 8. 



Fig. lb. The same specimen. Spines cleaned; a, marginal spine with pedicel- 

 lariae removed; b, outer adambulacral; c, inner adambulacral ; 

 e, f, adambulacral major pedicellariae; X 28. 



Fig. 2. Orthasterias californica Verrill. Type, a, an inferomarginal spine, 

 cleaned ; b, a dorsal spine with a wreath of minor pedicellariae ; 

 X12. 



Fig. 2a. The same specimen, a. outer; b, inner adambulacral spine; X 12. 



Fig. 2&. The same specimen. Major pedicellariae ; a. b, c, d, e, dorsal ; f, g, 

 adambulacral; h, i, actinal interradial; X 12. 



Fig. 3. Orthasterias dawsoni Verrill. Type. Dermal major pedicellariae; 

 a, b, stout dorsal form ; c, d, e, more slender spatulate or platalei- 

 form sorts from the lateral area; X 12. 



Fig. 3a. The same specimen. Spines ; a, b, c, dorsal spines treated with 

 Javelle water to remove most of the pedicellariae ; X 12. 



Fig. 36. The same specimen. Inferomarginal spines ; a, b, a pair with pedicel- 

 lariae; c, d, a smaller pair cleaned with Javelle water; X 12. 



(■64) 



