Preliminary report on the Echini collected in 1906, from May to December, among the Aleutian Islands, in Bering Sea. and along the coast of Kamchatka, Saghalin, Korea, and Japan, by the U. S. Fish Commission steamer Albatross, Lieut.-Commander L. Mv. 51No. 5109–139
Agassiz, Alexander and Clark, Hubert Lyman. 1907. "Preliminary report on the Echini collected in 1906, from May to December, among the Aleutian Islands, in Bering Sea. and along the coast of Kamchatka, Saghalin, Korea, and Japan, by the U. S. Fish Commission steamer Albatross, Lieut.-Commander L. M." Bulletin of the Museum of Comparative Zoology, 51, (5) 109–139.