PLATE I. 
S. J. Mackie Del. 
RHYNCHONELLA 
In the Collection of J. Jones, Esq., of Gloucester. 
a 
Figs. 1—3. Rhynchonella acuta, from the Lias Marlstone. 
Figs. ¢4—3. Rhynchoneila cynocephala, from the “‘ Cephalopoda-bed.” 
Figs. 10—14. Rhynchonella cynocephala, from the Upper Lias Sand. 
