Echinoderms. 9 c 



Stenasterias macropora Verrill 



Station 200 Port Clarence, Alaska; 2-3 fathoms; sandy grey mud, 

 with algse (thread algse, Laminaria, etc.); August 4, 1913. 

 One specimen, measuring R = 62 mm., r=10 mm. 



Leptasterias arctica (Murdoch) 



Station 22. North of the mouth of the Kukpowruk river, Alaska (69 35' 

 [., 163 27' W.); 11-12 fathoms; rock and sand, with algse; August 17, 

 1913. 



Two specimens, of which the larger measures R = 15 mm., r = 3-5 mm. 



Station 43c. West of Cockburn point, Dolphin and Union strait, North- 

 west Territories; 20-30 metres; grey mud with many stones and algae (Lami- 

 naria, Delesseria and Lithothamnion) ; September 14, 1915. 



Two specimens ; one measures R = 1 2 mm . , r = 3 mm . , the other R = 1 1 mm . , 

 r = 3 mm. 



Leptasterias epichlora (Brandt) 



Station 200. Port Clarence, Alaska; 2-3 fathoms; sandy grey mud, 

 with algse (thread algse, Laminaria, etc.); August 4, 1913. 



Twenty-four specimens, all with five rays; the largest measures R = 19 mm., 

 r = 5 mm. 



Leptasterias? dispar Verrill 



Station 43c. West of Cockburn point, Dolphin and Union strait, North- 

 west Territories; 20-30 metres; grey mud with many stones and algse (Lami- 

 naria, Delesseria and Lithothamnion); September 14, 1915. 



One specimen; R = 20 mm., r = 5 mm. 



PLeptasterias, sp. 



Station 23. Northeast of Icy cape, Alaska (70 24' N., 161 25' W.); 

 9-10 fathoms; mud and pebbles; August 19, 1913. 

 One specimen. 



THE ASSOCIATION OF SPECIES. 



Station 16e. Off Kuskokwim bay, Alaska (59 24' N., 165 11' W.); 

 fathoms; black sand; July 5, 1913. 



Echinarachnius parma (dead only) 



Station 20 b and c. Grantley harbour, Alaska; 2-3 fathoms; sandy mud, 

 with algse; July 30, 1913. 



Strongylocentrotus drobachiensis Asterias nortonensis 



Station 200. Port Clarence, Alaska; 2-3 fathoms; sandy grey mud, 

 with algse (thread algse, Laminaria, etc.); August 4, 1913. 



Strongylocentrotus drobachiensis Asterias polythela 



Stegophiura nodosa Asterias anomala 



Amphiodia craterodmeta Stenasterias macropora 



Levtasterias evichlora 



