82 
Plate VllI 
Figure 1. 
Figure 2. 
Figure 3, 
Figure 4. 
Parallelodon cardioceratanum Crickmay sp. nov., holotype, X 3-28. Locality 
No. 24, Upper Jurassic. (Page 45.) • . r tLo 
Parallelodon cardioceratanum Crickmay sp. nov., mk-prmt of the t^th of the 
holotype (gelatine process), X 3-6. The black areas correspond to the sockets 
of the right valve. (Page 45.) , . x i • 
Parallelodon canlioceraianum Crickmay sp. nov., holotype about natural size. 
Mckarnia wcZearm ^Crickmay sp. nov., holotype, about natural size. A right 
valve showing byssal sinus, small central chondroplmre, and single, large 
muscle- scar. Locality No. 34. Lower Cretaceous. (Page 45.) 
