NODOSARIA AMBIGUA. 211 



1. NoDOSABiA AMBIGUA, Neugehoveii, 1856. Plate VI, fig. 11. 



Orthocerata, Soldani, 1780, Saggio Orittogr., p. 108, pi. vi, fig. 43, L ; and (Horto- 



ceratia) Testaceogr., vol. ii, 1798, Appendix, p. 141, 

 pi. vi, fig. 43, L (fossil). 

 Orthoceratia Baculi, Soldani, 1791. Testaceogr., vol. i, part 2, pp. 96, 97, pi. cii, 



figs, zz ^ and A ; and pi. ciii, figs. E, r, G, h, 

 and p ? 

 Orthocera ?, Woodivard, 1833. Geol. Norfolk, p. 60, pi. vi, fig. 24. 

 NoDOSABiA gUB^QUALis, Costa, 1855. Mem. Accad. Sci. Napoli, vol. ii, p. 140, pi. i, 



fig. 5. 



— AMBiGTTA, Costa, 1856. Atti Accad. Pontan., vol. vii, fasc. 2, p. 137, 



pi. xii, figs. 9«, A, and var. figs. 10 a, A. 



— — Neugehoren, 1856. Denksch. k. Akad. Wiss. Wien, vol. xii, 



part 2, p. 71, pi. i, figs. 13—16. 



— TEXANA, Conrad, 1857. Eeport U.S. and Mexican Boundary Survey, 



vol. i, part 2, p. 159, pi. xiv, figs. 4 a, b, c. 



— TORNATA, Schv^ager, 1865. Novara-Exped. G-eol. Theil, vol. ii, p. 223, 



pi. V, fig. 51. 



— sub.s:qualis, Silvestri, 1872. Atti Accad. Grioen. Sci. Nat., n. s., 



vol. vii, p. 91, pi. xi, figs. 260—263. 



— MONiLiFOEMis, Elirenhevg, 1873. Abh. k. Akad. Wiss. Berlin, p. 390, 



pi. vi, III, fig. 11. 



— EADicuLA, var. AMBIGUA, Brady, 1884. Eeport ' Challenger,' p. 496, 



pi. Ixii, fig. 3. 



— AMBIGUA, Fornasini, 1889. Foram. Mioc. S. Eufillo, pi. i, fig. 8 ; and 



fig. 9, var. (:= Lingulina rotundata, 

 d'Orb). 



— RADICULA, var. AMBIGUA, Sherhom and Chapman, 1889. Journ. Eoy. 



Micr. Soc. for 1889, p. 486, pi. xi, fig. 16. 



— AMBIGUA, var. suBiEQUALis, Fomasini, 1890. Mem. Accad. Sci. 



Bologna, ser 4, vol. x, p. 467, pi. o, fig. 5. 



— — var. ANNULATA, i^orwasm, 1890. Ibid., ser. 4, vol. x, p. 467, 



pi. o, figs. 3, 4, 6, 7. 



— — — Mariani, 1891. Boll. Soc. Geol. Ital., 



vol. X, fasc. 2, p. 172, pi. vi, fig. 4. 



— RADICULA, var. AMBIGUA, Dervieux, 1894. Boll. Soc. Geol. Ital., 



vol. xii, fasc. 4, pp. 601 and 625, pi. v, fig. 8, 



— AMBIGUA, Fornasini, 1894. Mem. E. Accad. Sci. Istit. Bologna, ser. 5, 



vol. iv, p. 207, pi. i, fig. 2 (= JST. suh- 

 lequalis, Costa-). 



— — De Amicis, 1895. Naturaliste Sicil., vol. xiv, p. 21. 



1 Fig. sz is probably the same as Nodosaria clava, Costa, ' Atti Ace. Pont.,' vol. vii, 1856, p. 140, 

 pi. xiii, fig. 7 ; and fig. A, N. cylindracea, Costa, ibid., fig. 6 ; both closely allied to N. ambigua. 



2 For the determination of the species in O. G. Costa's Collection see C. Fornasini's discrimina- 

 tive memoir in the vols, iv and v (1894-5) o£ the work quoted. 



28 



