PLATE 33 

 Nuculites fraxinus nov. 



Page 141 



i An internal cast of the left valve 

 2 Cast of the hinge of the right valve, x 3 



; a Interiors of right valves showing the hinge and strong clavicle. 

 ( 3, x 1 ){ ; 4, x 2 ) 

 Locality. Pine Hill, N. Y. 



Nuculites (Ditichia) doto nov. 



Page 140 



5-8, 10 Internal casts of valves showing the degree of development of 



the clavicular ridges. (5, 7, x 2 ; 6, 10, x 3 ; 8, x 1^) 

 9 Cast of the hinge of the right valve, x 3 

 Locality. Pine Hill, N. Y. 



Carydium gregarium Beushausen 



(See plate 5) 

 Page mi 



11, 12 Internal cast of left valve, natural size and x 5, the latter showing 



the character of the hinge 

 13, 14 Similar internal casts showing the denticulated ridge (groove). 



(13, x 3 ; 14, x 5) 



Macrodus ? desuetus nov. 



Page mi 



15 Internal cast of right valve showing the hinge structure, x 1 ]/ 2 

 16, 17 Internal cast and exterior of other valves, x 1 */£ 

 Locality. Pine Hill, N. Y. 



Goniophora cercurus nov. 



Page 141 



18 Sculpture cast of right valve showing part of hinge 



19 Internal cast with radial pallial markings well defined 



20 Exterior, showing normal form and sculpture 



232 



