PLATE LXXIX. 

 Cypricardinia planulata. 



Page 484. 

 Figs. 1, 2. A right and a left valve of this species. 



Schoharie grit. Scholiarie, N. Y. 

 Fig. 3. A cast of a right valve showing muscular scars and pallial line. 



Schoharie giit. Schoharie, JV. Y. 

 Figs. 4, 5. Cardinal view and left side of a spooimen showing the inecpiality of the valves and muscular scai-s. 



Schoharie grit. Schoharie, N. Y. 



i 



Cypbicakdinia indenta. 



Page 485. 

 See Plate 96. 

 Figs. 6-8. Right and left valves showing the usual form of the species, enlarged to two diameters. 



Comiferous limestone. Balcock's hill, Oneida Co., iV. Y. 

 Fig. 9. An elongate right valve, enlargeil to two diameters. 

 Fig. 10. A right valve, enlarged to three diameters. 

 Fig. 11. A left valve. 

 Fig. 12. A right valve, natural size. 

 Fig. 13. A small left valve, enlarged to three diameters. 

 Fig. 14. A right valve, enlarged to three diameters, showing the surface markings. 



Hamilton group. Ontario Co., N. Y. 

 Fig. 15. An elongate left valve, enlarged to two diametei-s. 



Hamilton group. Shore of Canandaigua lake. 

 Fig. 16. A left valve, similar to the preceding, natural size. 



Hamilton group. Shore of Ovmuco lake, N. Y. 

 Fig. 23. A right valve preserring the test and sui-face markings. 



Hamilton group. Moscow, N. Y. 



. iGrPKIOAHUINlA AI^qUATA. 

 Page 486. 

 Fig. 17. A left valve of this species, enlarged to two diameters. 

 Chemung group. Near Elmira, N. Y. 



