62 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



VALVUUNA TRIANGULARIS d'Orblgny. 



Valvulina triangularis d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 270, No. 1; 

 Modules, 1826, No. 25. — Heron-Allen and Earland, Journ. Roy. Micr. 

 Soc, 1908, p. 331. 



Heron-Allen and Earland record a single specimen of this species 

 from shore sands of Sussex, England. This seems to be the only 

 record for it in the Atlantic. 



VALVULINA CONICA (Parker and Jones). 

 ' Plate 11, figs. 8, 9. 



Valvulina triangularis Parker and Jones, Ann. Mag. Nat. Hist., eer. 2, vol. 19, 

 1857, p. 295, pi. 11, figs. 15, 16 (not Valvulina triangularis d'Orbigny). 



Valvulina triangularis Parker and Jones, var. conica Parker and Jones, Philos. 

 Trana., vol. 155, 1865, p. 406, pi. 15, fig. 27. 



Valvulina conica M. Sars, Vid. Selsk. Forh., 1868, p. 249. — 11. B. Brady, Rep. 

 Voy. Challenger, Zoolc^y, vol. 9, 1884, p. 392, pi. 49, figs. 15, 16.— Woodward, 

 New York Micr. Soc, 1885, p. 150.— H. B. Brady, Journ. Roy. Micr. Soc, 



1887, p. 896.— H. B. Brady, Parker, and Jones, Trans. Zool. Soc, vol. 12, 



1888, p. 220, pi. 41, fig. 21; pi. 42, figs. 16, 17.— Wright, Proc Roy. Irish 

 Acad., ser. 3, vol. 1, 1891, p. 472.— Goes, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 39, pi. 8, figs. 342-352.— Chapman, Proc. Zool. Soc 

 London, 1895, p. 21.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 286, pi. 31, 

 fig. 3. — ^Whiteaves, Geol. Survey Canada, 1901, p. 10. — Cushman, Bull. 

 71, U. S. Nat. Mns., pt. 2, 1911, p. 58, figs. 93a-c (in text).— Heron-Allen 

 and Earland, Trans. Linn. Soc. London, ser. 2, vol. 11, 1916, p. 233. — 

 Cushman, Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 142, pi. 27, fig. 7. 



Description. — Test typically attached, conical, often with the 

 axis somewhat curved, the apical end bluntly pointed, the affixed 

 end flat and truncate, even concave; chambers arranged spirally, 

 but so as to form a triserial test; wall coarsely arenaceous, rough or 

 fairly smooth on the surface; aperture slit-like, at the inner basal 

 margin of the chamber, protected by a valvular lip; early chambers 

 dark reddish-brown, the later becoming lighter; area of attachment 

 light gray. 



Length about 0.50 mm. 



Distribution. — This seems to be well distributed in the Atlantic, 

 being recorded from the coasts of Norway and Sweden, 100 to 450 

 fathoms (183 to 823 meters), Faroe Channel, and the west of Scot- 

 land. On the American side of the Atlantic it occurs in the Gulf of 

 St. Lawrence, at numerous stations off the eastern coast of the 

 United States, Bermuda, in the Gulf of Mexico, and on the Abrohlos 

 Bank of Brazil. From an examination of the material I have had 

 it seems that there may be more than one species, as the apical end, 

 even in the conical forms, is quite different, especially in different 

 areas. The species is also recorded from the Mediterranean and from 

 the Pacific. 



