PLATE LXXV. 



FIGS. i-id. Orthasterias merriami Verrill. Spines and pedicellarise from No. 

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

 marginal spines; ic, adambulacral spines; ib, a stout dorsal 

 with a major pedicellaria attached; id, inf eromarginal ; X 

 14; No. 1181, Mus. Comp. Zool. 



FIGS. 2-2b. Orthasterias dawsoni Verrill. Type. Spines and pedicellarise, 

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

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

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

 row ; c, d, from outer row. 



FIGS. 3~3c. Orthasterias koehleri (deLoriol) Verrill. Type. After de 

 Loriol; 3, part of dorsal side, about natural size; 30, four 

 dorsal ossicles and spines ; 3&, portion of actinal side, X 

 3^i a major pedicellaria; X 16. 



(152) 



