PLATE LXXXIII. 



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



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



peractinals; g, h, inferomarginals; X n. 

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



adambulacral spine; b, c, adambulacral major pedicellarix; 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, f; papular pores, a'; X n. 

 Fig. 3. Allasterias forficulosa Verrill. Type. Portion of the dorsal surface, 



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



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



dermal minor pedicellarix, /' /'; X H. 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. 3b. The same specimen, a-e, marginal spines ; X 16. 

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



e, marginal ; f, axillary ; X 25. 



(168) 



