Mr. J. Lycett on the Upper Lias of Gloucestershire. 1(53 



trations of the Geology of Yorkshire ' under the name of Astarte 

 lurida : the large anterior side and the small lunule mark the 

 latter as a distinct species. 



Several examples of Astarte lurida were obtained in the upper 

 portion of the Upper Lias in a mill-stream cutting at Holcomb ; 

 it has also occurred very abundantly a little higher in the p-<>- 

 logical scale, in the lower zone of the Cynocephala-stage at 

 Nailsworth. D'Orbigny ('Prodrome') places it in his "JSUge 

 Hajocien," which is probably an error; the English localities 

 cited by him (Fox Hill and Taunton) are not Inferior Oolite ; 

 nor does it appear that the latter formation, although so rich in 

 the genus Astarte > has ever produced A. lurida. 



VOL. II. 



