12 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



GLOBIGERINA HELICINA d'Orhigny. 



Plate 3, figs. 1, 2. 



Globigerina helicina d'Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 277, No. 5. — 

 Parker, Jones, and H. B. Brady, Ann. Mag. Nat. Hist., ser. 4, vol. 8, 1871, 

 p. 175, pi. 11, fig. 113.— H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 287; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 605, pi. 81, figs. 4, 5.— 

 Egger, Abh. kon. bay. Akad. Wiss. Mimchen, CI. n, vol. 18, 1893, p. 370, 

 pi. 13, fig. 52. — Silvestri, Mem. Pont. Accad. Nuovi Lincei, vol. 15, 1899, 

 p. 264, pi. 5, fig. 6. — Fornasini, Mem. Accad. Sci. 1st. Bologna, ser. 5, vol. 7, 

 1899, p. 583, pi. 3, figs. 11, 12.— Millett, Journ. Roy. Micr. Soc, 1903, p. 688, 

 pi. 7, fig. 1.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 154.— Side- 

 bottom, Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 52, No. 13, 

 1908, p. 4, pi. 1, fig. 9. 



Description. — Test oblong or ovate, composed of several chambers 

 more or less irregularly arranged, inflated, the later chambers being 

 added on the periphery of the test without regard to the spiral 

 arrangement of the earlier ones; wall reticulate; aperture on the basal 

 side of the inner margin of the chamber but also are added one or 

 more accessory apertural openings on the upper side of the test, 

 especially in the added last chambers. 



Diameter up to 1 mm. 



Distribution. — Bagg records this species as rare at Albatross station 

 H 4696 in 367 fathoms off the Hawaiian Islands. I have it also from 

 the same region, Albatross station H 2923 in 392 fathoms where it 

 occurred with several specimens here figured. 



It may be a question as noted by Brady whether this may not be 

 an abnormal development of some other species, as it seems to occur 

 but rarely and always shows an irregular form. 



GLOBIGERINA ^QUTLATERALIS H. B. Brady. 



Plate 2, figs. 1-3; plate 10, fig. 5. 



Cassidulina globulosa (part) Egger, Neues Jahrb. fur Min., 1857, p. 296, pi. 11, 

 fig. 4. 



Globigerina sequilateralis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, 

 p. 71; Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 605, pi. 80, figs. 18-21.— 

 Wright, Proc. Belfast Nat. Field Club, 1884-85, App. 9, 1886, p. 332, pi. 27, 

 fig. 9. — Chapman, Quart. Journ. Geol. Soc, vol. 48, 1892, p. 517, 

 pi. 15, fig. 14. — Egger, Abb. kon. bay. Akad. Wiss. Munchen, CI. ii, vol. 18, 

 1893, p. 364, pi. 13, figs. 5-8.— Goes, Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, 1894, p. 86, pi. 14, fig. 767.— Chapman, Journ. Roy. Micr. Soc, 1896, 

 p. 589, pi. 13, fig. 7.— Goes, Bull. Mus. Comp. Zool., vol. 29, 1896, p. 66.— 

 Silvestri, Mem. Pont. Accad. Nuovi Lincei, vol. 15, 1899, p. 265, pi. 5, 

 fig. 8. — Fornasini, Mem. Accad. Sci. 1st. Bologna, ser. 5, vol. 7, 1899, p. 580, 

 pi. 4, figs. 3, 4.— Flint, Ann. Rep. U. S. Nat. Mus'., 1897 (1899), p. 323, pi. 

 70, fig. 3. — Rhumbler, in Brandt, Nordisches Plankton, Heft 14, 1900, p. 

 20, figs. 21-23.— Millett, Journ. Roy. Micr. Soc, 1903, p. 689.— Bagg, Proc. 

 U. S. Nat. Mus., vol. 34, 1908, p. 152.— Sidebottom, Mem. and Proc Man- 

 chester Lit. and Philos. Soc, vol. 52, No. 13, 1908, p. 4, pi. 1, fig. 10. 



Description. — Test composed of numerous inflated chambers ar- 

 ranged in a bilaterally symmetrical, planospiral coil of one and a 



