2gg BULLETIN 82, UXITED STATES NATIONAL MUSEtTM VOLUME 1 



Swallow Bay, Straits of Magellan; 22 meters; mud and rock; H.M.S. Alert [Bell, 

 1882; A. H. Clark, 1913] (1, B.M.). Type locaUty. 



Near Cape Providence, Straits of Magellan; H.M.S. Sylvia [A. H. Clark, 1913; 

 Gisl^n, 1928] (1,B.M.). 



Desolation Island; Vettor Pisani [Chierchia, 1885]. 



Mission scientifique du Cap Horn station 100; southeast of Port Famine, Straits 

 of Magellan; 326 meters [A. H. Clark, 1911] (11, U.S.N.M., 35970; P.M.). 



Mission scientifique du Cap Horn station 103; Punta Arenas [A. H. Clark, 1911] 

 (1, P.M.). 



Mission scientifique du Cap Horn station 121; New Year Sound, m the extreme 

 south of the Cape Horn archipelago, south of Tierra del Fuego [A. H. Clark, 1911] 

 (3, P.M.). 



Mission scientifique du Cap Horn station 165; northwest of Vauverlandt Island, 

 Ponsonby Sound, south of Navarin Island; 143 meters; temperature 6.4° C. [A. H. 

 Clark, 1911] (2, P.M.). 



Mission scientifique du Cap Horn station 177; between Navarin and Hoste Islands, 

 south of Tierra del Fuego; 270 meters; temperature 7.7° C. [A. H. Clark, 1911] (4, P.M.). 



Mission scientifique du Cap Horn station 179; Murray Narrows; 200 meters [A. H. 

 Clark, 1911] (9, P.M.). 



Mission scientifique du Cap Horn station 182; Etroit de Siege, south of Diego; 

 120 meters [A. H. Clark, 1911] (4, P.M.). 



Off Constituci6n, Chile (lat. 35°18' S., long. 72°47' W.); 594 meters; off the 

 Valparaiso-Concepci6n cable; cable ship Retriever (2, B.M.). 



Geographical range.- — From the Cape Horn archipelago northward on the Pacific 

 side of southern South America nearly to the latitude of Valparaiso (35° N.). 



Bathymetrical range. — From 22 to 594 meters. 



Thermal range.— Fiom 6.4° C. to 7.7° C. 



History. — Although first dredged by the Challenger on January 5, 1876, this species 

 was first described by Prof. F. Jeffrey Bell in 1882 from a specimen collected by Dr. R. 

 W. Coppingcr of the Alert at Swallow Bay in 1878. Professor Bell considered this form 

 as a variety of the arctic TIeliomcfra glacialis. 



In 1885 it was mentioned, under the name of Comatvla, sp., by Lieutenant Chierchia 

 of the Italian ship Vettor Pisani as having been found at Desolation Island. The 

 specimens from this expedition were turned over to Dr. P. H. Carpenter for description, 

 but he published nothing upon them and they seem to have disappeared. 



In 1886 Dr. Carpenter compared BeU's supposed variety with arctic glacialis and 

 stated that the two represented entirely distinct species. In 1888 he described in detail 

 and figured the single individual which had been dredged by the Challenger under the 

 name of Antedon rhomboidea, and mentioned that several examples of what he regarded 

 as true mageUanica had been obtained by the corvette Vettor Pisani which he hoped 

 soon to be able to describe at length. 



Dr. Clemens Hartlaub in 1895 under the name rhomboidea recorded a specimen which 

 had been obtained in Smyth's Channel by Dr. Rehberg, and gave the same name to 

 some others which had been dredged by the Albatross off the Central American coast; 

 these last represent F. tanneri. Prof. Hubert Ludwig in 1899 recorded another from 

 Puerto Bueno, in Smyth's Channel. 



