PLATE LXIV. 



Fig. I. Orthasterias leptolena Verrill. Type. Actinal side; about % natural 



size. Canadian Geol. Survey. 

 Fig. la. The same specimen. Dorsal side ; y% natural size. 

 Fig. 2. The same. A young specimen. Actinal side ; 9/10 natural size. 

 Fig. 2a. The same specimen. Dorsal side ; 9/10 natural size. One ray is lost. 



(130) 



