88 
Plate XI 
Figure 1. 
Figure 2. 
Figure 3. 
Figure 4. 
Figure 5. 
Figure 6. 
Avcella harrisonensis Crickmay sp. nov^ paratype, X l-S. Anterior aspect of 
left valve. Locality No. 41. Lower Cretaceous. (Page 48.) 
A ucella harrisonensis Crickmay sp. nov., paratype, X 1 • 8. Left valve. Locality 
No. 41. Lower Cretaceous. (Page 48.) ,,, r i ^ • 
A ucella hanisonensis Crickmay sp. nov., holotype, X 1 - 5. Kight valve, anterior 
aspect. Locality No. 41. Lower Cretaceous. (Page 48.) . ^ 
A ucella gigas Crickmay sp. nov., holotype, X *53. Two valves in contact, left 
aspect. Locality No. 41. Lower Cretaceous. (Pa^ 49.) 
Aucella gigas Crickmay sp. nov., holotype, X -53. Right aspect. (^S6 49.) 
Aucella gigas Crickmay sp. nov., holotype, X -49. Anterior aspect. (Page 49.) 
