346 BITLLETIN 53, TTlsriTED STATES NATIONAL MUSEUM. 



1 15024. Leda hypsoma Dall. Holotype. 



Miocene. Natural Well, Duplin County, North Carolina. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Ft. IV, 1S9S, 

 p. 5S9, pi. 32, fig. 2. 



1 15556. Leda illecta Guppy. • Cotype. 



Eocene. Manzanillo, Trinidad, West Indies. 



Guppy, Froc. Sci. Assoc. Trinidad. 1S67. p. 174; ibid., 1882, p. 173, 

 pl- 7. fig- 5- 



1 14806. Leda ( linifera var. ?) canonica Dall. Cotypes. 



Oligocene. Calhoun County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Ft. IV, 1S98, 

 P- 591- 



1 14808. Leda linifera chipolana Dall. Holotype. 



Oligocene. Calhoun County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Ft. IV, 1S98, p. 591. 



162528. Leda minuta praecursor Arnold. Holotype. 



Pleistocene. vSan Pedro, California. 



Arnold, ]\Ieni. Cal. Acad. Sci., Ill, 1903, p. 97, pl. 17, fig. 6. 



145635. Leda multilineata Conrad. Plesiotypes. 



Oligocene. Vicksburg, Mississippi. 



Dall, Trans. Wagner Free Inst. Sci. Fhila.. Ill, Ft. IV, 1898, p. 588, 

 pl. 25, figs, n, lib. 



115559. Leda peltella Dall. Holotype. 



Oligocene. Jamaica. 



Dall, Trans. Wagner Free Inst. Sci. Fhila., Ill, Ft. IV, 189S, p. 579, 

 pl. 32, fig. 5. 



1 15557. Leda perlepida Guppy. Holotype. 



Pliocene. Matura, Trinidad. 



Guppy, Froc. Sci. Assoc. Trinidad, 1867, p. 173; Geol. Rlag., Lon- 

 don, Dec. II, I, 1874, p. 442, pl. 18, fig. 9. 



145659. Leda phalacra Dall. Holotype. 



Miocene. Plum Point, Maryland. 



Dall, Trans. Wagner Free Inst. Sci. Fhila., Ill, Ft. IV, 1S9S, p. 592. 



145633. Leda pharcida Dall. Holotype. 



Chickasawau (Ivocene). Woods Bluff, Alabama. 



Dall, Trans. Wagner Free Inst. vSci. Fhila. , III, Ft. IV, 1898, p. 587. 



pl. 32, fig. s: 



3957. Leda subscitula Meek and Hayden. Cotypes. 



Permian. Near mouth of Smoky Hill River, Kan.sas. 

 Meek and Hayden, Trans. Albany Inst., IV, 1858, p. 79. 

 = Yoldia ? subscitula. 



