50 CARBONICOLA, ANTHRACOMYA, AND NAITADITES. 
3. CaRBONICOLA acuta (Sowerby). Plate III, figs. 1—12; Plate IV, figs. 8—17; 
Non 
Plate V, figs. 1,3—37,39; Plate VI, figs. 1—43. 
Unto acutus, Sow. Min. Conch., vol. i, p. 84, pl. xxxiii, figs. 5, 7, 1829. 
Defrance. Dict. Sci. Nat., vol. xxxiii, p. 294. 
Hoeninghaus. Verzeichniss Petrefact. Sammlung, 1829, p. 17. 
— Neues Jahrbuch, 1830, p. 240. 
Dumont. Geol. Liége, 1832, p. 356. 
Davreux. Essai sur la constit. géolog. Liége, 1833, p. 101, pl. v, 
figs. 4, 8. 
Murchison. Sil. Syst., 1839, p. 105, fig. c. 
— TELLINARIUS, Goldfuss. Petrefacta Germanie, 1834-40, vol. ii, p. 180, 
pl. exxxi, fig. 17, 1840. 
Carpinta acuta, de Koninck. Carb. Foss. Belg., 1842, p. 75, pl. I, fig. 8. 
— Agassiz. Translation Sow. Min. Conch., 1842. 
TELLINARIA, de Koninck. Carb. Foss. Belge, 1842, p. 77, pl. I, fig. 14; 
pl. H, fig. 5. 
PacHyoDON EXOLETUS, Brown. Ann. Mag. Nat. Hist., vol. xii, 1848, p. 392, 
pl. xvi, fig. 4. 
anTIQuus, Brown. Ibid., p. 394, pl. xvi*, fig. 4. 
TRANSVERSUS, Brown. Ibid., p. 395, pl. xvi*, fig. 5. 
LevipEnsis, Brown. Ibid., p. 395, pl. xvi*, fig. 8. 
AGRESTIS, Brown. Ibid., p. 393, pl. xvi, fig. 11. 
Unio TELLINARIUS, Garner. Nat. Hist. Staffordshire, 1844, p. 452, pl. u, fig. 23 
(no name nor description). 
— seENEx, Brown. Foss. Conch., 1849, p. 178, pl. Ixxiii, fig. 31. 
— a@restis, Brown. Ibid., pl. lxxiii, fig. 20. 
—  fTRANSVERSUS, Brown. Ibid., pl. lxxiii, fig. 21. 
—  Levripensts, Brown. Ibid., pl. lxxii, fig. 30. 
— xExoLEetus, Brown. Ibid., pl. lxxiu, fig. 25. 
Cargpontcona acuta, M‘Ooy. Paleozoic Fossils, 1854, p. 514 (description only). 
ANTHRACOSIA acuta, King. Ann. Mag. Nat. Hist., 1856, ser. 2, vol. xviii, pl. iv, 
fig 5, p. 57. 
Unto Lorrneri, Ludwig. Paleontographica, vol. viii, 1860, p. 183, pl. lxxii, 
figs. 1, La, 2. 
— meLLINaRrtus, Ludwig. Ibid., vol. x, 1861, pl. ii, figs. 4 a—d. 
ANTHRACOSIA acura, Salter. Geol. Surv. Mem., Iron Ores of South Wales, 1861, 
pt. 3, pp. 226 and 228, pl. u, figs. 20, 21. 
— Ramer. Lethea Geognostica, 1876, pl. xliv, fig. 9. 
SECURIFORMIS, Achepol. Niederrheinisch.- Westfalisch. Steinhohlen- 
gebirge, Atlas, 1880-83, p. 47, pl. xiii, figs. 3—6. 
— _ Ibid., p. 59, pl. xvi, fig. 3. 
— — Ibid., Suppl., pl. iu, fig. 1. 
CaRDINIA TELLINARIA, Achepol. Ibid., pp. 40, 41, pl. xi, figs. 4, 9. 
ANTHRACOSIA GRACILIS, Achepol. Ibid., Suppl., pl. iii, figs. 38, 39. 
RECTANGULARIS, Achepol. Ibid., p. 86, pl. xxvii, figs. 1, 2. 
— — Ibid., Suppl., pl. iv, fig. 12. 
Fasricit, Achepol. Ibid., pp. 119, 120, pl. xxxvi, figs. 5, 11. 
