PLATE LXX. 



FIG. i. Urasterias linckii (Muller 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 pedicellarise and 



spines ; X 3- 

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



surrounding pedicellariae ; X 3- 

 FIG. 5. Orthasterias calif arnica Verrill. Type. Portion of the actinal side 



of a ray ; X 4&- 

 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; X 2. 



