jO() CRETACEOUS LAMELLIBRANCHIA. 



Measurements : 



Length . 28 mm. 



Height 12 „ 



Affinities. — This species approaches L. oblongus, d'Orbigny, and L. alpinus, 

 Zittel. 



Remarks. — The three specimens seen are imperfectly preserved, and the radial 

 ornament, described ])y d'Orljigny as occurring on the antero-ventral part of the 

 valves, is not shoAvii. 



Distribution. — Cenomanian (Meyer's Bed 10) of Dimscombe. 



F(wii7//— DREISSENSIID^, Graij. 



Genus — Septifek, C. A. Becluz, 1848. 

 ('Rev. ZooL.'p. 275.) 



Septifer lineatus (Suiferbi/), 183G. Plate XVIII, figs. 1 — 12. 



? 1820. PiNNiTES UNGULATUS, E. F. Schlotheim. Die Petrefacteukuude, p. 3U4. 

 1836. MoDioLA LiNEATA, /. de C. Soiverby. Trans. Geol. Soc, ser. 2, vol. iv, 



pp. 129, 338, pi. xiv, tig. 2 (non Mytilus lineatus, 

 Gmelin. 1789). 

 1839. — ANGUSTA, F. A. Rimer. Die Verstein. uorddeutsch. Oolitheu- 



geb Nachtrag, p. 33, pi. xviii, fig. 36 (nou 

 M. angusta, Deshayes, 1824). 

 ? 1840. — CoTT^i;, H. B. Geinitz. Char. d. Scbiclit. u. Petref. des siichs 



Kreidegeb., pt. 2, p. 56, pi. x, fig. 5. 



1841. — ANGVSTA, F. A. Romer. Die Verstein. uorddeutsch. Kreidegeb., 



p. 66. 

 ? 1841. Mytilus CoTTiE, Burner. Ibid., i>. 66, pi. viii, tig. 18. 



1842. — CuviERi, P. Math'ron. Cat. Foss. des Bouches-du-Ehoue, p. 179, 



pi. xxviii, tigs. 9, 10. 

 ? 1843. — CoTT^, H. B. Oeinitz. Die Verstein. von Kiesliugswalda, p. 15. 



1844. — LINEATUS, A. d'Orbigny. Pal. Fran9. Terr. Crut., vol. iii, p. 266, 



pi. cccxxxvii, figs. 7 — 9. 

 r* 1844. MoDioLA granulosa, V. Potiez and A. Michaud. Galerie des Moll., vol. ii, 



p. 132, pi. liv, fig. 10. 



1845. Mytilus (Modiolus) asper, E. Forbes (non Suwerhy). Quart. Jouru. Geol. 



Soc., vol. i, p. 248. 

 ? 1846. — CoTT^, A. E. Be^iss. Die Verstein. der bohm. Kreideformat., 



pt. 2, p. 14, pi. xxxiii, fig. 4. 

 1848. Modiola LINEATA, H. G. Bronn. Index Palaeont., vol. i, p. 737. 

 1850. MiTYLus suBLiNEATus, A. d'Orhl(/)iy. Prodr. de Pal., vol. ii, pp. 81, 119. 

 ? — — SUBANGUSTUS, d'Orbigny. Ibid., p. 81. 



