PLATE XXXV. 



Fig. i. Orthasterias columbiana Verrill. Type. Same specimen as pi. xxrv, 

 fig. 4. Dorsal side ; ]/ 2 natural size. Yakutat. Yale Mus. 



Fig. 2. Luidiaster dawsoni (Verrill) Ludwig. Type. Same specimen as pis. 

 xxxiii and xxxiv. About Y$ natural size. Geol. Surv. Canada. 



(72) 



