ABT. 3 SOUTH AMERICAISr FOEAMINIFEBA — CUSHMAN AND PARKER 13 



Family BULIMINIDAE 

 Genus BULIMINELLA Cushman, 1911 



BULIMINELLA ELEGANTISSIMA (d'Orbigny) 



Plate 3. Figures 32. 13 



BuVunina elcyanlisshna d'Orbigny, Voyage dans I'Aiiierique M6i'idiouale, vol. 5, 

 no. 5, " Foraminiferes," p. 51, pi. 7, ligs. 13, 14, 1839.— ScHLUMBEKGEaj, 

 Feuille Jeun. Nat., vol. 12, p. 8, pi. 1, fig. 14, 1882.— H. B. Beady, Rep. Voy. 

 Challenger, Zoology, vol. 9, p. 402, pi. 50, figs. 20-22, 1884.— Sidebottom, 

 Mem. Pi-oc. Manchester Lit. I'hllos. Soc, vol. 49, no. 5, p. 11, pi. 2, fig. 6, 1905. 



Btilimiiwlla elegantlssima Cushman, U. S. Nat. Mus. Bull. 71, pt. 2, p. 89, 1911; 

 Proc. U. S. Nat. Mus., vol. 56, p. 606, 1919; Coutr. Cushman Lab. Foram. 

 Res., vol. 1, pt. 2, p. 40, pi. 6, figs. 5 a, 6, 1925. — Cushman and Keixettt, 

 Proc. U. S. Nat. Mus., vol. 75, art. 25, p. 6, pi. 3, figs.1-3, 1929.— Cushman, 

 Florida State Geol. Surv. Bull. 4, p. 42, pi. 8, figs. 2, 3, 1930. 



Test elongate, spiral, making about three volutions, initial end 

 pointed, much more so in the microspheric form ; chambers numerous, 

 7 to 10 in the la.st-formed whorl, narrow, slightly inflated; sutures 

 distinct, slightly curved, very slightly depre.ssed; wall smooth, 

 finely perforate; aperture elongate, narrow, somewhat enlarged 

 toward the middle of the apertural face. 



This has proved to be one of the most abundant species in the 

 collection, originally described from the west coast of South America, 

 where it is also very abundant. Its range includes the Falklands 

 and the coast of South America northward as far as our material 

 covers, to Rio de Janeiro Harbor, where it also occvirs in typical 

 form. Its fossil range goes back at least to the Miocene of Florida, 

 where it is extremely common in the Choctawhatchee marl at 

 numerous localities. Many other things have been included by 

 various authors in this species, but in its typical form it does not 

 seem to show any great degree of variation. 



BULIMINELLA PARALLELA. new species 



Plate 3, Figures 15 a-c 



Test elongate, the sides usualW nearly parallel for most of their 

 length, both ends broadly rounded, nearly circular in transverse 

 section; chambers distinct, in three or more whorls, the spiral suture 

 being somewhat irregularly crenulate, several chambers, five or more, 

 in each whorl, not much if at all inflated; sutures distinct, slightly 

 limbate, flush with the surface; wall smooth and polished, very finely 

 perforate ; aperture rounded with very slightly raised costae running 

 in toward it on the surrounding depressed area. Length, 0.25 mm.; 

 breadth, 0.08-0.1 mm. 



Holotype (U.S.N.M. No. 21934) from station 2 off Ilha Paqueta,.. 

 Rio de Janeiro Harbor, collected by Dr. Waldo L. Schmitt. 



