PLATE XXXVn. 



PAGE 



Figs. 1. la. LuciNA aquiana Clark 174 



1. Exterior of rig'ht valve. Type specimen. Aqiiia Creek. U. S. Na- 



tional Museum, 

 la. Interior of same valve. 



Figs. 2, 2a. Lucina astaetiformis Aldrich 175 



2. Interior of left valve. 1 mile southeast of Piscataway. 

 2a. Exterior of same valve. 



Figs. 3, 3a, 3b. Ltjcina daetoni Clark 175 



3. Interior of right A'alve of the type specimen. Woodstock. 

 3a. Exterior of same valve. 



3b. Exterior of left valve of same individual. 



Figs. 4-7. LuciNA "DHXEEI Clark 176 



4. Exterior of right valve of type specimen. Woodstock. 



5. Interior of right valve of specimen. 1 mile southeast of Mason 



Springs. 



6. Interior of left valve. Same locality. 



7. Exterior of left valve of type specimen. Woodstock. 



Figs. 8, 8a, 9. Lucina whitei Clark 176 



8. Exterior of right valve of type specimen. Woodstock. 

 8a. Interior of same specimen. 



9. Exterior of left valve of duplicate type. Same locality. 



389 



