FORAMINIFERA OF THE ATLANTIC OCEAN. 

 Ammolagena davata — material examined. 



91 



Genus GIRVANELLA Nicholson and Etheridge, 1878. 



Girvanella Nicholson and Etheridge (Hyperammina vagans (H. B. Brady)) 



Monogr. Silur. Foss. Gervais, vol. 1 (1880), 1878, p. 23. — Rhumbler, Foram. 



Plankton Exped., pt. 2, 1913, pp. 386, 419. 

 Hyperammina H. B. Brady (part), Quart. Journ. Micr. Sci., vol. 19, 1879, p. 33; 



Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 260. 

 Tolypammina Rhumbler, Nachr. Kongl. Ges. Wiss. Gottingen, 1895, p. 83; 



Arch. Prot., vol. 3, 1903, p. 276.— Cushman, Bull. 71, U. S. Nat. Mus., pt. 1, 



1910, p. 66. 

 Serpulella Eimer and Fickert, Zeitschr. Wiss. Zool., vol. G5, 1899, p. 674. 



Description. — Test typically adherent by its undersurface, but 

 may become free; consisting of an elongate oval proloculum and a 

 long irregular second chamber, tubular, with nearly even diameter 

 unbranched; composed of sand grains and a large proportion of 

 yellowish or reddish brown cement. 



The three species here considered seem to belong to this genus pro- 

 posed in 1878 by Nicholson and Etheridge for fossil species. From 

 the general characters of the test it is placed under the subfamily 

 Ammodiscinae. 



GIRVANELLA VAGANS (H. B. Brady). 



Plate 35, figs. 4, 5; plate 36, fig. 1. 



Hyperammina vagans H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 33, 

 pi. 3, fig. 5; Rep. Voy. Cliallenger, Zoolog>', vol. 9, 1884, p. 260, pi. 24, figs. 

 1-9.— Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 270, pi. 11, fig. 2.— Chap- 

 man and HowcniN, Mem. Geol. Surv. N. S. Wales, vol. 14, 1905, p. G, pi. 

 2, fig. 1. — IIeron-Allen and Earland, Proc. Roy. Irish Acad., vol. 31, pt. 

 64, 1913, p. 41, pi. 2, fig. 9; Trans. Zool. Soc. Loudon, vol. 20, 1915, p. 610; 

 Trans. Linn. Soc. London, vol. 11, pt. 13, 1916, p. 221; Journ. Roy. Micr. 

 Soc, 1916, p. 40. 



