124 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



TROCHAMMINA GLOBIGERINIFORMIS (Parker and Jones). 



Globigerina bulloides Williamson, Recent Foraminifera of Great Britain, 1858, 

 p. 56, pi. 5, figs. 116-118 (not G. bulloides d'Orbigny 1828). 



Lituola nautiloidea, var. globigeriniformis Parker and Jones, Trans. Roy. Soc. 

 London, vol. 155, 1865, p. 407, pi. 15, figs. 46, 47. 



Lituola (Ilaplophragmium) globigeriniformis Terrigi, Nuovi Lincei Atti, 1880, p. 

 175, pi. 1, fig. 3. 



Haplophragmium globigeriniforme Siddall, Cat. Brit. Rec. Foram., 1879, p. 4. — 

 W. B. Carpenter, The Microscope, 6th ed., 1881, p. 561, fig. 320a, b.— 

 H. B. Brady, Denkschr. kais. Akad. Wiss. Wien., vol. 43, 1881, p. 100; Rep. 

 Voy. Challenger, Zoology, vol. 9, 1884, p. 312, pi. 35, figs. 10, 11.— Balkwill 

 and Wright, Trans. Roy. Irish Acad., vol. 28, 1885, p. 329. — Haeusler, Abh. 

 schweiz. pal. Ges., vol. 17, 1890, p. 36, pi. 4, figs. 13, 16, 17.— J. Wright, 

 Proc. Roy. Irish Acad., vol. 1, 1891, p. 468. — Terrigi, Mem. Roy. Com. Geol. 

 Italia, vol. 4, 1891, p. 68, pi. 1, fig. 7. — Chapman, Journ. Roy. Micr. Soc, 

 1892, p. 324, pi. 5, fig. 16. — Egger, Abh. kon. bay. Akad. Wiss. Miinchen, vol. 

 18, 1893, p. 260, pi. 5, figs. 30, 31.— Goes. Kongl. Svensk. Vet. Akad. Handl., 

 vol. 25, No. 9, 1894, p. 22, pi. 5, figs. 128-133.— Chapman, Proc. Zool. Soc. 

 London, 1895, p. 16.— Goes, Bull. Mus. Comp. Zool., vol. 29,1896, p. 30.— 

 Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 277, pi. 21, fig. 1.— Sidebottom, 

 Mem. and Proc. Manchester Lit. and Philos. Soc, vol. 49, no. 5, 1905, p. 4, pi. 

 1, fig. 6.— Bagg, Proc. U. S. Nat. Mus., vol. 34, 1908, p. 126. 



Ammoglobigerina bulloides Eimer and Fickert, Zeitschr. wiss. Zool., vol. 65, 

 1899, p. 704. 



Description. — Test free or adherent, spiral, trochoid, spire varying 

 in its elevation, usually wider than high, chambers globose, all visible 



from above, only those of 

 the last-formed coil visi- 

 ble from below; test com- 

 posed of from two to four 

 volutions, the last formed 

 one usually of four, occa- 

 sionally three, chambers, 

 194 rapidly increasing in size 



Figs. 193-194.— trochammina globigeriniformis. x 20. progressively as added, 



FROM PHOTOGRAPH. 193, FROM ABOVE; 194, FROM BELOW. 11 P 1 1 



wall oi sand grains and a 

 variable amount of cement, outer surface fairly even; aperture an 

 arched slit on the ventral side of the chamber at its contact with 

 the adjacent chamber of the preceding volution; color of the test 

 reddish-brown. 



Diameter 0.5-1.5 mm. 



Distribution. — This species is one of the most common of the 

 arenaceous species in deep water. The Challenger obtained it at 

 seven stations in the North Pacific in 15-3,950 fathoms, all but one 

 in more than 1,800 fathoms. Goes records it at two Albatross sta- 

 tions in the eastern Pacific in 772-1,218 fathoms. Bagg records a 

 few doubtful specimens from the vicinity of the Hawaiian Islands, 

 Albatross station H4585 in 689 fathoms. In the present work I 



