TRUNCATULINA REFULGENS. 303 



Truncatulina eefttlgens, Jones, Parker, and Brady, 1866. Monogr. Foram. 



Crag, App. I and II, No. 82. 



— — Sars, 1868. Vidensk-Selsk. Forhandl. for 1868, p. 248. 



— — Brady, 1868. Proc. Greol. Soc. GHasgow, vol. vi, p. 362 



— — Brady and Rolertson, 1870. Ann. Mag. Nat. Hist., 



ser. 4, y6\. vi, p. 303. 



— — P., J., and B., 1871. Ibid., ser. 4, vol. viii, p. 176, 



pi. xii, fig. 139. 



— — Brady and Bohertson, 1875. Brit. Assoc. Rep. for 



1874, p. 191. 



— — Terrigi, 1883. Att. Ace. P. N. Lincei, vol. xxxv, 



p. 197, pL iii, fig. 40. 



— — Brady, 1884. Eeport ' Challenger,' p. 659, pi. xcii, 



figs. 7—9. 



— — Basset, 1885. Ann. Soc. Sci. N. Char.-Inf., No. 21, 



p. 162, fig. 77. 



— — Fornasini, 1886. Boll. Soc. Geol. Ital., vol. v, pp. 



167, 168. 



— — Sherlorn and Chapman, 1886. Journ. Roy. Micr. Soc, 



ser. 2, vol. vi, p. 756, pi. xvi, 

 figs. 13 a — c. 



— — Brady, 1887. Ibid., vol. vii, p. 920. 



— — Bgger, 1893. Abhandl. k. Bayer. Ak. "Wiss., vol. xviii, 



p. 401, pi. xvi, figs. 31—33. 

 Planorbulina REFULGENS, Qoes, 1894. K. Sven. Vet.-Akad. Handl., vol. xxv. 



No. 9, p. 89, pi. XV, figs. 775, 776. 



Characters. — Shell free or parasitic, regular; conical or plano-convex. Oral 

 surface conical or dome-shaped, aboral surface flat or slightly concave ; chambers 

 long, arcuate, somewhat inflated. Foramina inconspicuous. 



This is but an exaggerated condition of Tr. lohatula in which the convexity of 

 the oral surface is increased, sometimes so much as to give the shell the form of 

 a tall cone. The pseudopodial perforations are commonly obliterated by the free 

 deposit of shell-substance. In other respects the characters of Tr. lohatula apply 

 equally to Tr. refulgens. 



Occurrence. — Truncatulina refulgens, according to the ' Challenger ' Report, is 

 confined to temperate seas, and occurs at depths of from 45 to 2400 fathoms. 

 Egger in his ' Gazelle ' Memoir records specimens from off Mauritius and North 

 Australia at depths of 74 and 194 fathoms respectively. 



Fossil specimens have been obtained from the London Clay, the Pliocene of 

 Southern Italy, and from the Pleistocene of Ireland. In the Coralline Crag we 

 have specimens from Tattingstone, Sudbourne, and Broom Hill (zone d), and 

 from Aldborough (zone g). It has also been recorded in the First Part of the 

 Monograph from the Red Crag. 



