SILUEIAN GROUP. 



131 



Tarritella gregaria, Saw. 

 obsoleta, Soto. 



Turritella plana, Mc'Coy. 



CoQolaria elongata, Portl. 



Sowerbii, Ltf. 

 Creseis gracillima, SAarpe, 

 obtnsa, Sharpe. 



Pteeopoda. 



Creseis primseva, Forbes. 



Sedgwickii, Forbes. 



ventricosa, Sharpe. 

 Theca Fwrbesii, Sharpe. 



Heteeopoda. 



Bellerophon acntus, Sow. 

 alatus, Fortl. 

 bilobatns. Sow. 

 carinatus. Sow. 

 dilatus. Sow. 

 {Jymestriensu, Sow.) 



BelleropboB elongatns. Sow. 

 gibbus, Portl. 

 globatiis, Sow. 

 Murcbisoni, If Orb. 

 trilobatus. Sow. 

 Wenlockensis, Sow. 



Cephalopoda. 



Gomphoceras pyriforme, Sow. 



subfosiforme, Munst. 

 snbpjTiforme,i!/«ttJ^. 

 Lituitcs articulatBS, Sow. 

 Biddalpbii, Sow. 

 comu-arietis, Sow. 

 giganteus. Sow. 

 Ibei, Sow. 

 tortnosas. Sow. 

 Nautilus undosus, Sow. 

 Orthoceras acuarium, Munst. 

 annnlatum, Sow. 

 approximatum, Sow. 

 articulatum, Sow. 

 attenuatum, Sow. 

 bisiphonatum. Sow. 

 breviconicum, Portl. 

 Brightii, Sow. 



Orthoceras Brongniartii, Troost. 

 bullatum, Sow. 

 calamiteum, ilunst. 

 canaliculatum. Sow. 

 centrale, His. 

 circnlare. Sow. 

 coraUifonnis, Mc'Coy. 

 couicum, His. 

 dimidiatiun, Sow. 

 distans. Sow. 

 eicentricum. Sow. 

 filosum, Sow. 

 fimbriatum, Sow. 

 Ibex, Sow. 

 imbricatum, Wahl. 

 inaequiseptum. Sow. 

 {gregarium. Sow.) 

 Ludense, Sow. 



