INOCERAMUS. 



323 



Micraster cor-anguinum) ; in the British Museum, No. L980J. This specimen was 

 first recognised as the original of Parkinson's figure by Mr. C. J). Sherborn. 



y 



Fig. S2. — Inoceramits Lamarcki var. Cuvieri, Sow. Chalk; locality and horizon unknown. British Museum, 



No. L23909. Right valve, x ->-. 



I. Cuvieri, Sowerby (Fig. 73), from the Middle Chalk of Royston (zone of 

 Terebratulina lata) ; in the British Museum, No. 43264. 



/. Lamarcki, Mantell (Fig. 66), from the Middle Chalk near Lewes (probably 

 from Mailing, zone of Terebratulina lata) ; in the British Museum, No. 4753. 



