224 Bulletin 31 224 



PLATH 23 



Figure Tage 



1-4. Leda semen Lea 57 



Fig. I, 8.5 mm., Lisbon. 



2, 7 mm., Claiborne sand. 



3, 8 mm., Claiborne sand. 



4, 6 mm., 6 mi. W. N. W. of Orangeburg, S. C. 



5-6. Leda seminoides Aldrich 57 



Fig. 5, 15 mm., Lisbon. 

 6, 17 " Lisbon. 



7-9. Leda ccelata C.onTa.d 57 



Fig. 7, 12 mm., Claiborne. 



8, 22 " Claiborne. 



9, 25 " Claiborne. 



10. Leda coelaioides, n. sp. , 13 mm 58 



Wautubbee, Miss. 



11-12. Leda multilineata Conrad 58 



Fig. II, II mm., Wautubbee. 

 12, 12 mm., Wautubbee. 



13. I^eda houstonia Harris, 6 mm 59 



Trinity River, Tex. ; Tex. State Mus. 



14-17. Leda plana Lea 60 



Fig. 14, 32 mm., 17 mi. above Newbern, N. C. 



15, X 6 ; Claiborne. 



16, 5 mm., Baker's Bluff, Ala. Aldrich Coll. 



17, 4,2 mm., Baker's Bluff, Ala. Aldrich Coll. 



Figs. 16 and 17 are the so-called piilcherrima of Lea's Con- 

 tributions. 



18-19. Leda trumani, n. sp 61 



Specimen 32 -\- in length ; from the St. Maurice clays at the 

 base of Claiborne bluff. 



20.23. L^eda opulenta Conrad 62 



Fig. 20, about 40 mm. Claiborne sand. 



21, umbonal area X 4, Claiborne sand. 



22, cartilage pit, &c, X 4, Claiborne sand. 



23, var. hauimetti^ 24 mm., Hammett's Br., La. 



