PLATE LXXV. 



Figs. i-id. Orthasterias merriami Verrill. Spines and pedicellariae from No. 

 1181 ; 1, a, b, c, and if, ordinary dorsal spines; la, a, b, c, 

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

 with a major pedicellaria attached; id, inferomarginal ; X 

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



Figs. 2-2&. Orthasterias daivsoni Verrill. Type. Spines and pedicellariae, 

 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. 3-3C. 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 

 ZVz; 3c, a major pedicellaria; X 16. 



(152) 



