46 



BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



Test slightly longer than broad, somewhat sigmoid in end view, 

 the periphery subacute; chambers in the young fairly distinct, in 

 the highly polished adult somewhat obscured; sutures flush with 

 the surface, usually indistinct; wall smooth and usually highly 

 polished; aperture rounded, sometimes with a very slight tooth. 

 Length, 0.5-0.65 mm. ; breadth, 0.4-0.45 mm. ; thickness, 0.3-0.35 mm. 



This species was found in the Albatross material only from deeper 

 Water and did not occur at any of the shallow stations. The data 

 for its distribution are given in the accompanying table. 



Table 13. — Sigtnoilina edivardsi — material examined 



1 Key to abbreviations is given in Table 1. 



Genus ARTICULINA d'Orbigny, 1826 



Articulina d'Okbigny, Ann. Sci. Nat., vol. 7, p. 300, 1S26.— H. B. Beady, Rep. 



Voy. Challenger, Zoology, vol. 9, p. 182, 1884. — Chapman, The Foraminifera, 



p. 93, 1902. — Cushman, Cushman Lab. Foram. Res. Spec. Publ. No. 1, p. 



150, 1928 ; U. S. Nat. Mus. Bull. 104, pt. 6, p. 50, 1929. 

 Nautilus Batsch (not Linnaeus), Conch, des Seesandes, p. 3, 1791. 

 Vertebralina (part) Parker, Jones, and H. B. Brady (not d'Orbigny), Ann. 



Mag. Nat. Hist., ser. 3, vol. 16, p. 22, 1865. 



