1394. PROCEEDINGS OF THE NATIONAL MUSEUM. 713 



This species lias since been dredged in the deep water of the Pacific 

 as far north as the Straits of Fnca. It is named in honor of Prof. O. 

 B. Jolinson. of Washington University, Seattle, Wash. 



CRYPTODON BISECTUS, Dall. 



Plate XXVI, figs. 2,5. 



Cryptodon lisectus, Dall. Proc. U. S. Nat. Mus., xiv, p. 189, 1891. 

 Venus hisecia, Coxrad, (ieol. IT. S. Expl. Exp., p. 724, pi. 17, fig. 10, 1850. 

 Tlnjatira? bisecta, Mkkk.B. T. checklist Mio. fos.,p. 8, 1861. 

 Conchocele disjuncta, Gabb, Pal. Cal. ii, p. 27, pi. 7, fig. 48, 1869. 



Station 2855, in the Pacific ott' the sonth coast of Aliaska Penin- 

 snla, in 00 fathoms, mud; temperature 44° F; also in Puget Sound 

 in deep water, Prof O. B. Johnson; and in the Miocene and Pliocene 

 beds of Oregon and California. No. 122556, U.S.KM. 



CALYPTOGENA PACIFICA, Dall. 

 Plate XXV, figs. 4, 5. 

 Cahjptogena pacifica, Dall, op. cit., p. 190, Ifidl. 



Station 3077, in Clarence Strait, Alaska, in 322 fathoms, mud; 

 bottom temperature 42.4o F. 122549, U.S.N.M. 

 This shell is also found in the Tertiaries of California. 



LIMOPSIS VAGINATUS, Dall. 

 Plate XXV, figs. 3, 6, 7. 

 Limopsis raginatus, Dall, op. cit., p. 190, 1891. 



Station 3330, in Bering Sea north of the eastern Aleutians, in 351 

 fathoms, sand; temperature 38.2° F. Also in the Pacific south of Uni- 

 mak Island, in 1865, at a depth of 80 fathoms, by W. H. Dall. No. 

 122547, U.S.N.M. 



A rather eroded valve retaining the epidermis of this extraordinary 

 shell was obtained with a sounding cup by me in Alaska about thirty 

 years ago. The hinge being destroyed, I felt so much doubt as to its 

 true character that it was left undescribed, and only when the fresh 

 specimens of the, Albatross were obtained was it possible to identify the 

 earlier find. 



Class BRACHIOPODA. 



With the species obtained at the Hawaiian Islands I have included 

 a few dredged by the Albatross elsewhere in the Pacific to avoid scat- 

 tering data on this very interesting group. 



Family EHYNcnoNELLiD^. 

 Genus FEIELEIA, Dall. 



Shell resembling Ilemithyris, Orbigny, from wliicli it is distinguished 

 by having the inner upper margins of the crura extended toward each 



