106 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



dceph' depressed: wall calcareous, smooth; aperture short, broad, 

 and rounded; color white. 



Length 0.50-0.85 mm. 



Distribution. — As far as the Alhatroufi material from the western 

 Atlantic goes, B. elegans is practically unknown, and is represented 

 by the following variety. About the British Isles, however, there are 

 numerous records for this species, but of these typical specimens, 

 according to Heron-Allen and Earland, " are of somewhat infrequent 

 occurrence." The only record from the western Atlantic is that 

 given by Flint from off Block Island, Albatross station D2584, in 541 

 fathoms (989 meters). A reference to Flint's figure, however, will 

 show that his specimens were variety exilis H. B. Brady. 



BULIMINA ELEGANS d'Orbisny. var. EXILIS H. B. Brady. 



Plate 17, liga. 7-12; plate 19, figs. 2, 3. 



Bulimina elegans d'Orbigny, var. exilis H. B. Brady, Rep. Voy. Challenger, 

 Zoology, vol. 9, 1884, p. 399, pi. 50, figs. 5, 6.— Wright, Ann. Mag. Nat. 

 Hist., vol. 4, ser. 6, 1889, p. 448.— Pearcey, Trans. Nat. Hist. Soc. Glasgow, 

 vol. 2, 1890, p. 176.— MiLLETT, Journ. Roy. Micr. Soc, 1900, p. 275.— Chap- 

 man, Journ. Linn. Soc. Zool., vol. 28, 1902, list, p. 400. — Sidebottom, 

 Mem. Proc. Manchester Lit. Philos. Soc, vol. 54, No. 16, 1910, p. 12, pi. 

 1, fig. 11.— CusHMAN, Bull. 71, U. S. Nat. Mus., pt. 2, 1911, p. 82, figs. 135a-c 

 (in text). — Heron-Allen and Earland, Journ. Roy. Micr. Soc, 1916, p. 42,; 

 Trans. Linn. Soc. London, vol. 11, ser. 2, 1916, p. 234, pi. 41, figs. 4-9. 



Bulimina elegans Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 290, pi. 36, fig. 3. 



Description. — Test elongate, slender, gradually tapering from the 

 acute apical end to its greatest width near the apertural end; cham- 

 bers numerous, triserial, apical end usually with a definite spine, 

 chambers inflated, smooth; sutures depressed, distinct; aperture 

 comma-shaped, small, in a slight depression of the surface. 



Length 0.75 mm. 



Distribution.— In his original description of this variety, Brady 

 mentions that ''such forms are by no means rare in deep water (1,000 

 to 1,500 fathoms, 1,829 to 2,743 meters) in the North Atlantic, and 

 having also been met with in both the North ^nd South Pacific (350 

 to 800 fathoms, 640 to 1,463 meters)." It is also recorded off the 

 southwestern coast of Ireland, 1,000 fathoms (1,829 meters), rare 

 (Wright); from both the warm and cool areas of the Faroe Channel 

 (Pearcey) , and off South Cornwall and west of Scotland (Heron- Allen 

 and Earland). In the dredgings from the western Atlantic this 

 species has been very common from numerous stations between the 

 latitude of the Gulf of Maine south to Cape Hatteras, with one station 

 off the Carolina coast. This is a definite localized area from which 

 so many species have been found in the Albatross material in abun- 

 dance but not farther south. One of the Challenger stations comes 



