﻿r.AMPSius 119 



showing feeble traces of biangulation. Female shell somewhat 

 rounded behind, with a faint marsupial swelling, generally 

 smaller than the male. 



Length (male) 57, height 32, diam. 16 mm. 



Length (male) 52, height 31, diam. 18 mm. 



Length (female) 46, height 27, diam. 17 mm. 



Cumberland and Tennessee River systems ; Green River, 

 Kentucky ; Tombigbee and Alabama Rivers drainage ; Colum- 

 bus, Georgia ; Wolfsville, North Carolina. 



Type locality, Black Warrior River. Ala. 

 Unio nebulosus Conrad, New F. W. Shells, 1834, p. 28, pi iii, 



fig. 7; p. 70. — ^Chenu, Bib. Conch., ist sen, IH, 1845, P- i^' 



pi. I, fig. 4. 

 Lampsilis nebtdosus Simpson, Syn.. 1900, p. 553. 

 Margarita (Unio) cumber landianns Lea, Syn., 1836, p. 27 ; 



1838, p. 20. 

 Margaron (Unio) cumberlandianus Lea, Syn., 1852, p. 30. 

 Utiio cumberlandicus Lea, Tr. Am. Phil. Soc, VL 1838, p. 25, 



pi. VII, fig. 19 ; Obs., n, 1838, p. 25, pi. VII, fig. 19. — Hanley, 



Biv. Shells, 1843, P- I95. P^- ^xii, fig. 59. — Chenu, III. 



Conch., 1858, pl. XXIV, figs, i, la, ib. — Sowerby, Conch. 



Icon., XVI, 1866, pl. xxxvi. fig. 197. 

 Margaron (Unio) cumberlandicus Lea, Syn., 1870, p. 48. 

 Unio notatus Lea, Tr. Am. Phil. Soc, VI, 1838, p. 28, pl. viii, 



fig. 22 ; Obs., II, 1838, p. 28, pl. viii, fig. 22. — Haneey, Biv. 



Shells, 1843, P- 193' pl- xxiii, fig. 9. — Chenu, 111. Conch., 



1858, pl. XXI, figs. 3, 3a, 3&. 

 Margarita (Unio) notatus Lea, Syn., 1836, p. 26; 1838, p. 19 

 Margaron (Unio) notatus Lea, Syn., 1852, p. 29; 1870, p. 45 

 Unio glaber Lea, Tr. Am. Phil. Soc, VI, 1838, p. 34, pl. x, fig 



29 ; Obs., II, 1838, p. 34, pl. X, fig. 29.— Haneey, Biv. Shells 



1843, P- 196, pl- XXIII, fig. 2. — Chenu, 111. Conch., 1858, pl 



XXIV, figs. 3, 3a, 3&. — Sowerby, Conch. Icon., XVI, 1868 



pl. i.xxxv, fig. 452. 

 Margarita (Unio) glaber Lea, Syn., 1836, p. 28 ; 1838, p. 20 

 Margaron (Unio) glaber Lea, Syn., 1852, p. 31 : 1870, p. 48. 



