90 
Plate XII 
Figure 1. 
Figure 2. 
Figure 3. 
Figure 4. 
Figure 5. 
Figure 6. 
Haidaia billhookensis Crickmay sp. nov., plaster cast of holotype, an external 
mould of the left valve. Anterior and dorsal outline, partly restored. Locality 
No. 21. Upper Jurassic. (Page 49.) 
Haidaia packardi Crickmay sp. nov., plaster cast of holotype, part of which 
is an external mould of the right valve, -73 of natural size. Locality No. 21. 
Upper Jurassic. (Page 50.) 
Haidaia packardi Crickmay sp. nov., internal natural cast of holotype, with 
some shell attached, -73 of natural size. Locality No. 21. Upper Jurassic. 
(Page 50.) 
Haidaia statlmnsis Crickmay sp. nov., plaster cast of holotype, an external 
mould of two valves in contact, left aspect, -73 of natural size. Shows outline 
and conch contour well, but gives poor idea of ornament. Locality No. 22. 
Upper Jurassic. (Page 50.) 
Haidaia statluensis Crickmay sp. nov., wax cast of first paratype, -73 of natural 
size, to show ornament. Locality No. 22. Upper Jurassic. (Page 50.) 
Haidaia statluensis Crickmay sp. nov., wax cast of second paratype. (Page 50.) 
