130 



W. S. Htidledon — The Yorkshire Oolite. 



of Oolite, which have been frequently mistaken for the Oolites 

 above the Middle Calcareous Grit. The so-called Coralline Oolite of 

 Scarborough Castle belongs here. Gasteropoda are scarce and badly 

 preserved with few exceptions. The Lower Coral Kag of Hackness 

 is in this series, and the shell-beds on this horizon in other localities 

 {e.g. Wydale) have yielded a few specimens. 



L C G, Lower Calcareous Grit. 



N.B. — The numbers on the left side of the Table refer to species 

 described in the Memoir, v r means very rare ; r rare ; * moder- 

 ately plentiful ; c, common ; v c, very common. 



CORALLIAN GASTEROPODA, YORKSHIRE; 



Genera and Species. 



Pwpuroidea nodulata. Young and Bird 



cf. tubei-osa, Sowerby 



species 



Murex Haccaitensis, Phillips 

 Natica buccinoidea. Young and Bird 



Clynienia, D'Orbigny 



Clytia, D'Orbigny 



arguia, Phillips 



Chemnitzia Heddingtonensis, Sowerby 



Pollux, D'Orbigny 



Langtonensis, Blake and Hudleston 



cf. corallina, D'Orbigny 



cf. Clytia, D'Orbigny 



^' Phasiaitella^' striata, Sowerby 

 Ph. striata, var. Bartone?isis ... 

 Pseudomelaitia gracilis, sp.n. 



Buvignieri, auctorum 



species 



Leymeriei, D'Archiac 



Cerithium tnuricatiim, Sowerby 



Russiense, D'Orbigny 



near to litncBforme, Rcemer 



near to grandineum, Buvignier 



near to Hunibe7-timtni, Buvignier 



bicinctum, sp.n 



gradatum, %T^.\\ 



inornattim, Buvignier 



Nerinaa fusiformis, D'Orbigny 



iT/i9;rrt;z«, D'Orbigny 



ditto, Brompton variety 



species 



psetcdovisurgis, sp.n 



Rcemeri, Phillippi 



species 



Goodhallii, Sowerby 



Alaria bispinosa, Phillips 



Littorina muricata. Sow. var. A 



Sow. var. B 



Sow. var. C. 



^^ Turbo," cf. Buvignieri, D'Orbigny 

 Alaria, cf. tridactyla, Buvignier 



Amberleya Stricklandi, s^.n 



princeps, Rcemer 



L.L. 



v r 



l'c< 



LCG 

 LCG 



CO 



V c 



V c 



fC.R. 



1 



C.R. 

 2 



V r 



V r 



V r 



? 

 V r 



