PLATE LXIV. 



FIG. i. Orthasterias leptolena Verrill. Type. Actinal side ; about 7/% natural 



size. Canadian Geol. Survey. 



FIG. 10. The same specimen. Dorsal side ; ^ natural size. 

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

 FIG. 20. The same specimen. Dorsal side ; 9/10 natural size. One ray is lost. 



(130) 



