PALAEOZOIC. 



C N C II I F E E A. 



CAMBRIAN AND SILmiAN. 



CAMBRIAN. LOWER SIL. UPl'ER SILURIAN. 



SPECIES. 



Sub-Kingdom. MOLLUSCA. 

 Class, PELECTFODA 

 Group, MoNOiirAEiA. 



AvicnLlD.E. 

 AmbonycMa JIaH, 1S43 ... 



— tumida Sollas 



AvrcFLiDa;. 

 Pterineea Gohlftiss, 1S32 



— posiJouia;formis M'Coy 



Group, DllITAEIA. 



SoLENiDa:. 



Cultcllus Schumacher, 1S60 



— rectus Salter 



NrcuLiDa:. 



Leda Schumacher, 1817 



— ambitrua SoUas 



MYTILIDa:. 



Modiolopsis Hall, 1847. 



— acutipora Sollas 



— inflata M'Co;i\ 



— var. clevata Solium 1 



Orthonota Conrad, 1S3S 



— Davicula SoJlas 





■^ -5 



ft. 



REFERENCES. 



ASIPJIONID.\. 



Sil. District of Rbymriey, Q. J. Oeol. Soc. vol. xxjv. [i 497 

 t. 24, f. 9. 



A.^IPIIONIDA. 



Sviiop. Sil. Foss. Irolaml, p. 22, t. 3, f. 10. 



SIPHONIDA. 



Ceraiosolen, Ann. Mag. Nat. Hist. 3 .^er. vol. t, p. 159; 

 ill. Sedgwick's Kendal Foss. Wordsworth's Letters oil the 

 Lakes, 1843-46 lAppendix). ? Sulen rectus. 



PTPHONIDA. 



Sil. District i>f KhjuiTiev, Q. J. (K'ol. Soc. vol. hit. p. 497, 

 t. 24. f. 7. 



A.?IPHOMDA. 



Sil. District of Rbjmnev, Q. J. Geol. Soc. vol. xxir. ]'. 496, 

 t. 24, f. 21,22. 



Sil. District of Khyiiiney, Q J. Oeol. Smv vol, xxiv. p. 496, 

 t. 24, f. 2. 



ASTPIIONIDA. 



Sil. District of Rhjmney. Q. J. Geol. Soc. vol. xxiv, y. 496, 

 t. 24, f. 3. 



3 " 



417 



