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Four species of Pacific Ocean Holothurians allied 
to Cucumaria frondosa (Gunner). 
By 
Charles Lincoln Edwards. 
With Plate 19. 
In a previous paper (1907), Cucumaria frondosa (GUNNER) was 
recorded from the north Pacific coast of North America. A more 
‚extended study of the large collections of the United States National 
Museum seems to show that Cucumaria frondosa does not occur in 
the Pacific Ocean, but that 4 species closely allied to it are found 
in this region. Professor Lenz, Director of the Lübeck Natural 
History Museum, has permitted me to examine the type specimens 
of Oucumaria fallax LupwısG from Alaska. Professor N. Nassonov, 
Director of the Zoological Museum of the Imperial Academy of 
Sciences of St. Petersburg, has lent me a specimen collected by W. 
BrAsHnıKkow in 1899—1902 in the Gulf of Sachalin, Okotsk Sea, and 
identified by Britren, 1906, as (ucumaria miniata Branpt. Rein- 
forced by the study of these specimens I have identified the species 
represented in the collections of the United States National Museum 
as Cucumaria californica SEMPER, 1868, Oucumaria japonica SEMPER, 1868, 
Oucumaria fallax Lupwıc, 1874, and Cucumaria miniata BRANDT, 1835. 
The miserable condition of Lupwıg’s type-specimens precluded 
any study of the internal anatomy and hence this author, 1881, is 
in error in placing his Oueumaria fallax in the synonymy of Cueu- 
Zool. Jahrb. XXIX. Abt. f. Syst. 39 
