CARBONICOLA AQUILINA. 69 



12. Carbonicola aquilina, Sowerby . Plate V, fig .2 ; Plate IX, figs. 1 — 10, 12 — 37 ; 



Plate X, figs. 1—42 ; Plate XI, figs. 31—33. 



Unio (no specific name), JJre. Natural History of Rutherglen, 1793, pp. 310, 311, 



pi. xvi, fig. 4. 



— aquilinus, Sowerby. In Prestwicb, J., On the Geology of the Coal-field of 



Coalbrookdale (read April 27th, 1836), Trans. Geol. 

 Soc. London, ser. 2, vol. v, 1840, pi. xxxix, fig. 12. 



— phaseolus, Sowerby. Ibid., pi. xxxix, fig. 11. 



— atratus, Goldfuss. Petrefacta Germanise, livr., 1837, p. 180, pi. cxxxi, 



fig. 16. 

 Pachtodon lateralis, Brown. Ann. and Mag. Nat. Hist., 1843, p. 391, pi. xv, 



fig. 3. 

 sulcatus, Brown. Ibid., p. 391, pi. xv, figs. 4 and 5. 



— bipennis, Brown. Ibid., p. 391, pi. xv, fig. 9. 



Unio lateralis, Broivn. Fossil Conchology, 1849, p. 177, pi. lxxiii, fig. 26. 



— bipennis, Brown. Ibid., p. 177, pi. lxxiii, fig. 27. 



— sulcatus, Brown. Ibid., p. 177, pi. lxxiii, figs. 28, 29. 



— aquilinus, Broivn. Ibid., p. 181, pi. lxxviii, fig. 23. 



— phaseolus, Brown. Ibid., p. 181, pi. lxxviii, figs. 21, 22. 

 Anthracosia Beaniana, King. Ann. and Mag. Nat. Hist., 1856, ser. 2, vol. xvii, 



p. 54, pi. iv, figs. 1, 2. 

 Unio securiformis, Ludwig. Pakeontographica, Band viii, 1859, p. 33, pi. iv, 



figs. 1—9. 

 Anodonta procera, Ludivig. Ibid., p. 36, pi. v, figs. 9, 10. 



— cicatricosa, Ludwig. Ibid., p. 35, pi. v, figs. 7, 8. 



Unio crassidens, Ludivig. Ibid., Bd. viii, 1861, p. 184, pi. lxxi, figs. 15 — 17. 

 Anthracosia aquilina, Salter. Mem. of the Geol. Survey of Great Britain, Iron 



Ores of South Wales, pt. 3, 1861, pi. ii, fig. 17. 



— aquilinus, Hull. Coal-fields of Great Britain, 1873, pi. i, fig. 5. 



— securiformis, Koenen. Zeitsch. Deutsch. Geol. Gesell., vol. xxxiii, 



1881, p. 686, pi. xxvi, figs. 6 and 7. 

 Non — aquilina, Ward. Trans. North-Staff. Inst. Mining and Mech. 



Engineers, vol. x, 1890, p. 128, pi. i, figs. 5 and 14. 



— Betrichi, Achepol. Niederrheinisch.-Westfalliche Steinkohlen 



Gebirge, Atlas, 1880-83, p. 60, Blatte xvii, 

 figs. 4, 20; Supplement, iii, figs. 17 — 21. 



— Serloi, Achepol. Ibid., p. 84, cuts 1 and 2; Supp. iii, figs. 23 — 29. 



— Lottneri, Achepol. Ibid., Supp. iv, fig. 4. 



— Decheni, Achepol. Ibid., Supp. iv, figs. 8 — 10. 



— Hauchecornei, Achepol. Ibid., Supp. iv, figs. 13, 15. 

 Berendti ?, Achepol. Ibid., Supp. iv, figs. 47, 48. 



— Romeri, Achepol. Ibid., Supp. iv, figs. 79, 80. 



Specific Characters. — Shell transversely ovate, flattened and compressed, 

 variable. Anterior end rounded, compressed, and small, its upper border being at 



