354 FORAMINIFERA OF THE CRAG. 



Nautilus ceispus, Montagu, 1803. Test. Brit., p. 187, Suppl., 1808, pi. xviii, 



fig. 5. 



— — Maton and Bachett, 1807. Trans. Linn. Soc, vol. viii, p. 115. 

 Themeon bigatus, Montfort, 1808. Conchyl. System., vol. i, p. 202, 51e genre. 

 Nautilus ceispus, Parkinson, 1811. Org. Eem. Former "World, vol. hi, p. 107, 



pi. xi, fig. 25. 

 Polystomella ceispa, Lamarck, 1822. Anim. sans Vert., vol. vii, p. 625, No. 1. 

 Vorticialis ceispa, Defrance, 1824. Diet. Sei. Nat., vol. xxxii, p. 181; and 



Blainville, 1825, Malaeologie, p. 375. 

 Nautilus ceispus, Wood, 1825. Index Testae., p. 63, pi. xiii, fig. 8. 



— ambiguus, Wood, 1825. Ibid., p. 66, pi. xiii, fig. 58. 

 Polystomella ceispa, d'Orbigny, 1826. Ann. Sci. Nat., vol. vii, p. 283, No. 1 ; 



Modele, No. 45. 



— Crouch, 1827. Introd. Conch., p. 41, pi. xx, fig. 14. 

 Nautilus ceispus, Brown, 1827. Illustr. Conch. Gt. Brit., fly-leaf, pi. lii, fig. 6. 

 Polystomella Oweniana, d'Orbigny, 1839. Foram. Amer. Merid., p. 30, pi. iii, 



figs. 3, 4. 

 Lanteei, d'Orbigny, 1839. Foram. Cuba, p. 74, pi. vii, figs. 12, 13. 

 ceispa, Brown, 1843. Foss. Conch., p. 22, pi. ii, fig. 15. 



— — 1844. Illustr. Conch. Gt. Brit., edit. 2, pp. 1 and 



145, pi. i, fig. 6. 

 — — Beuss, 1845. Geinitz's Grundriss, p. 647, pi. xxiv, fig. 43. 



— d'Orb., 1846. For. Foss. Vien., p. 125, pi. vi, figs. 



9—14. 



flexuosa, d'Orb., 1846. Ibid., p. 127, pi. vi, figs. 15, 16. 



ceispa, var., Williamson, 1848. Mem. Lit. Phil. Soc. Manchester, 



vol. viii, p. 44, pi. xxx ; P. 

 striatopunctata, Ibid., ser. 3, 

 vol. v, 1872, p. 134. 



— Williamson, 1848. Trans. Micr. Soc. Lond., vol. ii, p. 159, 



pi. xxviii, figs. 1 — 7. 

 flexuosa, Beuss, 1849. Denksch. k. Akad. "Wiss. Wien, vol. i, 



p. 370, pi. xlviii, fig. 3. 

 ceispa, Mantell, 1850. Pictor. Atlas, p. 144, pi. lxii, fig. 25. 



— Williamson, 1852. Trans. Micr. Soc, vol. iii, p. 123, 



pi. xviii, fig. 19. 



— Bronn, 1853-6. Lethaea Geogn., edit. 3, vol. iii, p. 204, 



pi. xxxv 2 , figs. 6 a, b. 

 steigilata, Schultze, 1854. Organ. Polythal., p. 64, pi. iv. 

 ceispa, Oosse, 1855. Man. Mar. Zool., p. 12, fig. 14. 



— Costa, 1856. Atti Accad. Pontan., p. 212, vol. vii, pi. xiv, 



figs. 11 a, A, B. 

 Nonionina? helicina,' Costa, 1856. Ibid., pi. xiv, figs. 13 A, B, C (near our 



PL II, figs. 42, 43). 



1 If this be a true Polystomella, it is an example of the combined characters of " covered " and 

 "uncovered" sides. See page 338. 



