﻿72 



CARBONIFEROUS AND PERMIAN FORAMINIFERA. 



Spieillina cretacea, Jones, 1854. In Morris's Catal., Brit. Foss., 2nd edit., p. 42. 



— infima, Id. Ibid. 



— sp., Id. Ibid. 



— arenacea, Williamson, 1858. Rec. Foram. Gt. Br., p. 93, pi. vii, 



fig. 203. 



Trochammina (squamata) incerta, Jones and Parker, 1860. Quart. Journ. Geol. 



Soc, vol. xvi, p. 304. 



Ammodiscus (species), Reuss, 1861. Sitzungsb. k. Akad. Wiss. Wien, vol. xliv, p. 365. 

 Trochammina incerta, Parker and Jones, 1862. In Carpenter's Introd. Foram., 



pp. 141, 312, pi. xi, fig. 2. 

 Cornuspira cretacea, Reuss, 1862. Sitzungsb. k. Akad. Wiss. Wien, vol. xlvi, p. 



34, pi. i, fig. 10. 



— — var. irregularis, Id. Ibid., figs. 1 1, 12. 



Involutina silicea, Terquem, 1862. Mem. Acad. imp. Metz, for 1860, 1861, p. 450, 



pi. vi, fig. 11. (Deuxieme Mem. Foram. 

 du Lias.) 



— aspera, Terquem, 1863. Ibid., for 1862— 1863, p. 221, pi. x, fig. 21. 



(Troisieme Mem. Foram. du Lias.) 

 Trochammina incerta, Brady, 1864. Trans. Linn. Soc. Lond., vol. xxiv, p. 72. 

 Cornuspira Hoernesi, Karrer, 1866. Sitzungsb. k. Akad. Wiss. Wien, vol. lii, 



p. 495, pi. i, fig. 10. 



Serpula Roessleri, Schmid, 1867. Neues Jahrbuch fiir Min., Jahrg. 1867, p. 583, 



pi. vi, figs. 46, 47. 



Cornuspira oolithica, Schwager, 1867. In Waagen's ' Ueber die Zone des Amm. 



Sowerbyi,' vol. i, part iii, p 655, pi. xxxiv (xi), 

 . % 4. 



Trochammina incerta, Jones, Parker, and Kir kg, 1869. Ann. and Mag. Nat. Hist., 



ser. 4, vol. iv, p. 388, pi. xiii, fig. 1. 



Cornuspira granulosa, C. infraoolpthica, &c, Terquem, 1870. Troisieme Mem. 



Foram. du Syst. Oolithique, pp. 242 — 244, 

 pi. xxv, figs. 12—20. 



Operculina liasina, Brauns, 1871. Der Unterjura im nordwest. Deutschland, 



p. 447, &c. {fide Bornemann). 

 Trochammina incerta, Miller and Vanden Broeck, 1873. Ann. Soc. Malac. Belg., 



vol. for 1873, Table. 



— — Brady, 187 S. Mem. Geol. Survey Scotland, Expl. Sheet 23, 



p. 95. 



— — Id., 1873. (In Young and Armstrong's Catal.), Trans. Geol. 



Soc. Glasgow, vol. iv, p. 272. 

 Ammodiscus infimus, Bornemann, jun., 1874. Zeitschr. d. deutsch. geol. Gesellsch., 



Jahrg. 1874, p. 725. 



Characters. — Test piano-spiral, discoidal, thin ; consisting of numerous, narrow, 

 more or less rounded convolutions of a non-septate tube of nearly uniform width. 

 Aperture usually formed by the open unconstricted end of the tube. Diameter y^th.inch 

 (0 5 mm.) 



