PLATE LXXV. 



Figs, i-irf. Orthasterias merriami Verrill. Spines and pedicellarise from No. 

 1181; I, a, b, c, and ic, ordinary dorsal spines; la, a, h, c, 

 marginal spines; \c, adambulacral spines; ife, a stout dorsal 

 with a major pedicellaria attached; \d, inf eromarginal ; X 

 14; No. 1 181, Mus. Comp. Z06I. 



Figs. 2-2&. Orthasterias dawsoni Verrill. Type. Spines and pedicellarise, 

 X20; 2, a, b, large valves of major pedicellariae ; 20, dorsal 

 spines; a, with wreath of minor pedicellariae; b, c, pedicel- 

 lariae removed; 2b, adambulacral spines; a, b, from inner 

 row ; c, d, from outer row. 



Figs. 3-3^. Orthasterias koehleri (deLoriol) Verrill. Type. After de 

 Loriol; 3, part of dorsal side, about natural size; 3a^ four 

 dorsal ossicles and spines; 36, portion of actinal side, X 

 SH; 3^> a major pedicellaria; X 16. 



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