124 
Plate^XIII 
Camarotoechia sp. 
Figures la, lb. View of ventral valves of two specimens. (Page 62.) 
Figures lc, Id. View of dorsal valves of two specimens. (Page 62.) 
Strophomem sp. 
Figure 2a. Dorsal valve showing the posterior depression and the character of the striae. (Page 63.) 
Figure 2b. Interior of the ventral valve showing the muscle scars. (Page 63.) 
Leptaem sp. 
Figure 3. Ventral valve of a very geniculate shell. 
Strophomem ruga n. sp. 
Figure 4a. Dorsal valve showing the peculiar surface markings. (Page 63.) 
Figure 4b. Cast of a dorsal valve. (Page 63.) 
Cyrtodonta septentrionis n. sp. 
Figure 5a. Right valve showing posterior lateral teeth, a part of the shell with surface markings, 
and the pallial line. (Page 63.) 
Figure 5b. Right valve of a smaller specimen. (Page 63.) 
Figure 5e. View of the hinge-line of the smaller specimen X 2 to show the cardinal teeth. (Page 
63.) 
Conularia esclavensis n. sp. 
Figure 6a. View of specimen. X 2. (Page 64.) 
Figure 6b. View of surface markings. X 6. (Page 64.) 
