PLATE LXVII. 



CONOCAHDIUM CUNKUS, vai'. ATTENUATUM. 



Page 410. 

 Fig-. 1. A small right valve. 



Schoharie grit. Knox, Albany Co., N. 1'. 

 Fig. 2. A cast of a small right valve. 



Schoharie grit. Knox, Albany Co., N. Y. 

 Fig. 3. A vential view of the cast of the interior of a small specimen. 



Schoharie grit. Schoharie, JV. Y. 

 Fig. 4. Cardinal view of a small individual, i-etaiiiing iiortions of the test. 



Strhoharie grit. SchoJtarie, i\'. Y. 

 Figs. 5, 6. The right valves of two specimens showing simple radii. 



Schoharie grit. Schoharie, iV. Y. 

 Figs. 7, 8. Loft and right .sides of a cast of the interior. 



Schoharie gi'it. Schoharie, N. Y. 

 Pig. 9. The posterior end of a siie<'imeii retaining both valve.s. 

 Fig. 10. An enlaj'goment of the surface from the .-pecimeii lig. 5. 



Fig. II. A ventral view of ii .simall ca.-^t of an interior, showing the furrows left by the thickene<l margins 

 of the shell. 



Schoharie grit. Schoharie. N. Y. 



CONOCARDIUM CUNKUS, Viir. NASUTUM. 

 Page 41U. 

 Pigs. 12, 13. Ventral and left sides of a small specimen. 



Schoharie grit. Schoharie, N. Y. 

 Figa. 14, 15. Left side and ventral view of a s])eciinen retaining its natural form and showing a duplication 

 of the radii. 



Schoharie grit. Schoharie, N. Y. 

 Fig. 10. A ventral view of a specimen retaining a portion of the test. 

 Fig. 17. The right side of a small specimen. 



Schoharie grit. Schoharie, N. Y. 

 Figs. 18-20. The cardinal, left and posterior views of a large individual retaining its noi'mal form and 

 proportions. 



Schoharie grit. Schoharie, N. Y. 





