Holothurians allied to Cucumaria frondosa (GUNNER). 609 
maria frondosa. The mean greatest diameter is 2,4 mm with a range 
from 0,7—8 mm. 
Habitat. — Alaska to Okotsk Sea, Alaska, Lupwıec, 1874; 
Gulf of Sachalin, Okotsk Sea, BrITTEn, 1906. 
Localities of the 49 specimens in the United States 
National Museum. — Atka, Alaska, abundant on rocky ledges 
just below low water-mark. Adakh Island. Bering Island. 
The Zoological Station, Naples, June 14, 1910. 
Literature. 
1852. Ayres, W. O., Notices of Holothuridae, in: Proc. Boston. Soc. 
nat. Hist., Vol. 4. 
1855. —, Echinodermata of the coast of California, in: Proc. California 
Acad. nat. Sc., Vol. 1 (2. Ed., p. 71—72, San Franc. 1873). 
1830. DE BLAINVILLE, H. M. D., Art. Zoophytes, in: Dict. Sc. nat, 
Vol. 60, Paris. 
1835. BRANnDT, J.F., Prodromus desceriptionis animalium ab H. MERTENSIO 
observatorum, Fasc. 1, St. Petersburg. 
1906. BRITTEN, M., Holothurien aus dem Japanischen und Ochotskischen 
Meere, in: Bull. Acad. Sc. St. Petersbourg (5), Vol. 25, June and Sept. 
1901. CLARK, H. L., The Holothurians of the Pacific Coast of North 
America, in: Zool. Anz., Vol. 24, p. 162—171, 14 text figs., Mar. 25, 
1902. —, Notes on some North Pacific Holothurians, ibid., Vol. 25, 
p. 562—564, July 21. 
1907. Epwarps, C. L., The Holothurians of the north Pacific coast of 
North America collected by the Albatross in 1903, in: Proc. U. 8. 
nation. Mus., Vol. 33 (1558), p. 49—68, Sept. 14. 
1908. —-, Variation, development and growth in Holothuria floridana 
POURTALES and in Holothuria atra JÄGER, in: Biometrika, Vol. 6 
(2 and 3), p. 236—301, Sept. 18. 
1909. —, Some Holothurian structures, in: Science (N. 8.), Vol. 29 
(741), p. 437, Mar. 12. 
1910. —-, Revision of the Holothurioidea. I. Cucumaria frondosa (GUNNER), 
in: Zool. Jahrb., Vol. 29, Syst., p. 1-26. 
