PLATE 33 



Nuculites fraxinus nov. 



Page 141 



1 An internal cast of the left valve 



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



3, 4 Interiors of right valves showing the hinge and strong clavicle. 



(3, x i y, ; 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 i^) 

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

 Locality. Pine Hill, N. Y. 



Carydium gregarium Beushausen 



(Set plate 5) 

 Page 141 



ii, 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 141 



15 Internal cast of right valve showing the hinge structure, x \y z 

 1 6, 17 Internal cast and exterior of other valves, x i y 2 

 Locality. Pine Hill, N. Y. 



Goniophora cercurus nov. 



Page 141 



1 8 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 



