PALEOZOIC. 



CONCHIFEEA. 



CAMBRIAN AND SILTJEIAN. 



CAMBEIAN. lOWEB SII. UPPBB SILUEIAN. 



SPECIES. 



Sub-Kingdom, MOLLUSCA. 

 Class, FELECYFODA 



Group, MONOMTABIA. 



Atiottlid^. 



Ambonyehia Sail, 1843 ... 



— tumida Sollas 



AVICTOID^. 



Pterinsea Goldfuss, 1832 



■ posidoniseformis M'Coy 



Group, DiMTAEIA. 



SOLBNID^. 



Cultellus ScTmmacher, i860 



— rectus Salter 



s 



NtrcuLiriE. 



Leda Schumacher, 1817 



— ambigua Sollas 



MTTILIDiE. 



Modiolopsis Hall, 1847., 



— acutipora Sollas .... 



inflata M'Coy 



var. elevata Sollas 



Mytilid^. 



Orthonota Conrad, 183S 



— naylcula Sollas 



3H 



EEFEEENCES. 



ASIPHONIDA. 



Sil. District of Rhymney, Q. J. Geol. Soc. vol. xxxv, p. 497, 

 t. 24, f . 9. 



Synop. Sil. Foss, 



ASIPHONIDA. 

 Ireland, p. 22, t. 2, f. 10. 



SIPHONIDA. 



Ceratosolen, Ann. Mag. Nat. Hist. 3 ser. vol. v, p. 159; 

 ib. Sedgwick's Kendal Foss. Wordsworth's Letters on the 

 Lakes, 1843-46 (Appendix). ? Solew rectus. 



SIPHONIDA. 



Sil. District of Ehynmey, Q. J. Geol. Soc. vol. xxxv, p. 497, 

 t. 24, f. 7. 



ASIPHONIDA. 



Sil. District of Rhymney, Q. J. Geol. Soc. vol. xxxv, p. 496, 

 t. 24, f. 21, 22. 



Sa. District of Rhymney, Q. J. Geol. Soc. vol. xxxv, p. 496, 

 t. 24, f. i. 



ASIPHONIDA. 



Sil. District of Rhymney, Q. J. Geol. Soc. vol. xxxv, p. 496, 

 t. 24, f . 3. 



417 



