PLATE IS. 
S. J. Mackie Del. 
RHYNCHONELLS 
In tUe CoUactioa of J Joues, Esq, of Gloucester. 
Ti^s. 1—3. Rhynchonelta acuta, from the Lias Marlstone. 
Figs. 4—9. Bhynchonellcj cynocephaJa. firom the " Cephalopoda-bed." 
KJs. 10 — H. Ehynchouella cynccephala. from the Upper Lias Sand 
