PLATE LXXXIII. 



Fia I. Asterias katherina Gray. Spines with pedicellariae ; a, adoral adam- 



bulacral; b, inner adambulacral ; c, d, outer adambulacral ; e, f, 



peractinals; g, h, inf eromarginals ; X U- 

 Fia 2. Leptasterias arctica (Murdoch). Spines and major pedicellariae; a, 



adambulacral spine; b, c, adambulacral major pedicellariae; d, 



axillary or interradial one ; e, unguiculate marginal one ; X 25. 

 Fig. 2a. The same specimen. Finer spined variety. Portion of the dorsal 



surface showing spines, c, d, d' ; papulae, a, a; minor pedicellariae, 



f* ff papular pores, a'; X H- 

 Fia 3. Allasterias forHculosa Verrill. Type. Portion of the dorsal surface, 



showing spines, c, d; papula, a, a; papular pores, a'; dermal 



major pedicellariae, e, e; circumspinal minor pedicellariae, /, f; 



dermal minor pedicellariae, /' /'; X n. Japan. No. 1183. Mus. 



Comp. Zool. 

 Fig. 3a. The same specimen. Adambulacral spines, a, b, c, and attached 



major pedicellariae, P, P; d, one of the same, detached; X 16. 

 Fig. 3&. The same specimen, a-e, marginal spines ; X 16. 

 Fia 3c. The same specimen. Major pedicellariae; a, b, c, d, dorsal dermal; 



e, marginal; f, axillary; X 25. 



(168) 



