NONIONINA UMBILICATULA. 345 



3. Nonionina umbilicatula (Montagu), 1808 ; Var. passing into N. depressula. 

 Plate V, fig. 32 (N. umbilicatula). Woodcuts, figs. 29 a, b (the 

 zoological type). 



Nautilitae minuscule, &c, SoJdani, 1789. Testaceogr., vol. i, part 1, p. 66, 



pi. lx, fig. B. 

 Lenticulse minusculse, Soldani, 1798. Testaceogr., vol. ii, p. 110, pi. xxvi, fig. 0. 

 Nautilus umbilicatulus, Montagu, 1803. Test. Brit., p. 191 ; Supplem., p. 78, 



pi. xviii, fig. 1. 

 Nonionina umbilicata, d'Orbigny, 1826. Ann. Sci. Nat., vol. vii, p. 293, No. 5. 

 Robulina Planciana, d' Orb., 1826. Ann. Sci. Nat., vol. vii, p. 290, No. 20. 

 Nonionina Soldanii, d'Orb., 1846. For. Foss. Vien., p. 109, pi. v, figs. 15, 16. 



— — Costa, 1856. Atti Accad. Pontan., vol. vii, p. 201, pi. xvii, 



fig. 11. 



— poltstoma, Costa, 1856. Ibid., p. 206, pi. xiv, fig. 10. 



— Baeleeana, Williamson, 1858. Bee. For. Brit., p. 32, pi. iii, figs. 



68, 69. 



— astebizans (F. and M.), var. umbilicatula {Montagu), P. and J., 



1859, Ann. Mag. Nat. Hist., ser. 3, vol. iv, p. 347. 

 Poltstomella cbispa, var. (Nonionina) umbilicatula, P. and J., 1865. Phil. 



Trans., vol. civ, p. 405, pi. xiv, figs. 

 42 a, b ; pi. xvii, figs. 58, 59. 

 Nonionina umbilicatula, Parker, Jones, and Brady, 1871. Ann. Mag. Nat. 



Hist., ser. 4, vol. viii, p. 242, pi. xii, 

 fig. 157. 



— — Parker and Jones, 1872. Ann. Mag. Nat. Hist., 



ser. 4, vol. ix, p. 218 (Macdonald's 

 pi. v, figs. 18, 19, ibid., 1857). 



— — Brady and Bobertson, 1875. Brit. Assoc. Eeport 



for 1874, p. 191. 

 . ' — — Siddall, 1878. Proc. Chester Soc. Nat. Sci., part 2, 



p. 56. 



— Formosa, Seguenza, 1879. Atti R. Accad. Lincei, ser. 3, vol. vi, 



p. 63, pi. vii, fig. 6. 



— umbilicatula, Terrigi, 1883. Att. Ace. P. N. Lincei, vol. xxxv, p. 203, 



pi. iv, fig. 48. 



— — Brady, 1884. 'Challenger' Eeport, p. 726, pi. cix, 



figs. 8, 9. 



— — Fornasini, 1886. Boll. Soc. Geol. Ital., vol. v, p. 239. 



— — Brady, 1887. Journ. R. Micr. Soc, p. 924. 



— — Brady, Parker, and Jones, 1888. Trans. Zool. Soc, 



vol. xii, p. 230, pi. xliii, fig. 19. 



— — Be Amicis, 1893. Boll. Soc. Geol. Ital., vol. xii, p. 458. 



— — A. Silvestri, 1893. Atti Ace. Zelant. Acireale, vol, v, 



p. 20, pi. iii, figs. 26, 27. 



