PLATE LXX. 



Fig. I. Urasterias linckii (Miiller and Troschel) Verrill. Portion of the 



actinal side of a ray of a North Atlantic specimen ; X 3- 

 Fig. 2. The same specimen. Portion of the dorsal side of a ray ; X 3- 

 Fig. 3. The same specimen. Madreporite with surrounding pedicellariae and 



spines; X 3- 

 Fig. 4. The same specimen. Nephridial pore or so-called "anal pore" and 



surrounding pedicellariae ; X 3- 

 Fig. 5, Orthasterias californica Verrill. Type. Portion of the actinal side 



of a ray ; X aVa- 

 Fig. 6. Parasterias albertensis Verrill. Type. Portion of the actinal side of 



a ray ; X 5- British Columbia. Yale Mus. 

 Fig. 7. Orthasterias forreri (Loriol) Verrill. Type. Portion of the dorsal 



side of a ray, showing the very large minor pedicellariae ; X 5%. 

 Fig. 8. Asterias polythela Verrill. Type. Portion of the dorsal side of a 



ray; X 4- Arctic America; Steamer Corwin. No. 15820. 

 Fig. 9. Orthasterias forreri forcipulata Verrill. Type. Portion of the side of 



a ray; X2. 



