78 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



of Mexico. Brady gives a number of Challenger stations, both in the 

 North and South Atlantic, mostly in fairly deep water. It does not 

 seem to be present off the British Isles nor living in the Mediterranean. 

 Neither Goes nor Flint record it from the western Atlantic, The 

 only station of Brady's in our area is station 24, off the lesser Antilles. 



Gaudryina chilosloma — material examined. 



GAUDRYINA PSEUDOFILIPORMIS (Cushman.) 



Plate 13, fig. 5. 



Gaudryina filiformis H. B. Brady (not G. filiformis Berthelin), Rep. Voy. Chal- 

 lenger, Zoology, vol. 9, 1884, p. 380, pi. 46, figs. 12a-c. — Balkwill and Wright, 

 Trans. Roy. Irish Acad., vol. 28, 1885, p. 333.— H. B. Brady, Journ. Roy. 

 Micr. Soc, 1887, p. 896. — H. B. Brady, Pa^.ker, and Jones, Trans. Zool. 

 Soc. London, vol. 12, 1888, p. 219, pi. 42, fig. 6.— Wright, Ann. Mag. Nat. 

 Hist., ser. 6, vol. 4, 1889, p. 448; Proc. Roy. Irish Acad., ser. 3, vol. 1, 1891, 

 p. 472.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 287, pi. 33, fig. 2.— 

 Eauland, Journ. Quekett Micr. Club, ser. 2, vol. 9, 1905, p. 205. — Heron- 

 Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 64, 1913, p. 57, 

 pi. 4, figs. 7-9; Journ. Roy. Micr. Soc, 1916, p. 42; Trans. Linn. Soc. London, 

 ser. 2, vol. 11, 1916, p. 232. 



Gaudryina pseudofili/ormis Cushman, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 70, 

 figs. 11a, b (in text). — Pearcey, Trans. Roy. Soc. Edinburgh, vol. 49, 1914. 

 p. 1013.— Cushman, Bull. 100, U. S. Nat. Mus., vol. 4, 1921, p. 151. pi. 29, 

 fig. 8. 



Description. — Test much elongate, composed of numerous cham- 

 bers; early portion triserial with indistinct sutures; later portion, 

 including nearly the entire test, biserial with the sutures deep and 

 well marked; cross section elliptical, showing some compression; 

 walls arenaceous, but usually smooth; aperture small, in adults back 

 a little way from the inner margin of the chamber, slightly elongate, 

 the edges thickened and raised to form a rim about it, appearing 

 nearly toothlike in end view; color gray. 



Length 1 mm. 



Distribution. — I separated this recent species in 1911 from the 

 Cretaceous species of Berthelm, which name was taken by Brady in 

 the Challenger Report and has since been followed by many authors. 

 Heron-Allen and Earland have criticized me for this (1916, p. 232) 

 but Pearcey, from his examination of the Challenger specimens and 

 others considers this change which I have made as "quite correct." 

 From the material I have examined from the western Atlantic this 



