92 
Plate XIH 
Figure 1. Yaadia lewisagassizi Crickmay sp. nov., wax cast of holotype, an external 
mould of left valve, *87 of natural size. Locality No. 39. Lower Cretaceous. 
(Page 50.) 
Figure 2. Yaadia lewisagassizi Crickmay sp. nov., wax cast of holotype, *87 of natural 
size, postero-dorsal aspect. Shows ornament of area and escutcheon. (Page 50.) 
Figure 3. Quoiecchia aliciae Crickmay sp. nov., holotype, -87 of natural size, posterior 
aspect. Locality No. 39. Lower Cretaceous. (Page 51.) 
h^gure 4. Quoiecchia aliciae Crickmay sp, nov., holotype, a right valve, -87 of natural 
size. (Page 51.) 
Figure 5. Quoiecchia aliciae Crickmay sp. nov., holotype, anterior aspect, (Page 51.) 
Figure 6. Quoiecchia aliciae Crickmay sp. nov., paratype. Juvenile, right valve. Locality 
No. 39. Lower Cretaceous. (Page 51.) 
Figure 7. Quoiecchia aliciae Crickmay sp. nov., paratype, same specimen as figure 6, 
dorsal aspect, -87 of natural size. (Page 51.) 
Figure 8. Quoiecchia aliciae Crickmay sp. nov., paratype, internal mould of right valve, 
X 1*9. Shows crenulation of ventral margin. Locality No. 39. Lower 
Cretaceous. (Page 51.) 
