QUADRULA 865 
(QUADRULA KLEINIANA (Lea). 
Shell subquadrate, convex to subinilated, solid, inequilateral ; 
beaks apparently moderately full and high; posterior ridge 
full, almost subangulate, ending at the base of the shell in a 
blunt point; anterior end round; base line slightly curved or 
straight ; posterior end obliquely truncated; surface generally 
covered with chevron-shaped, subnodulous ridges; epidermis 
brown, scarcely shining; pseudocardinals triangular ; lateral in 
the right valve rarely double; beak cavities not very deep, 
compressed ; anterior scars small; nacre dull purplish. 
Length 50, height 36, diam. 24 mm. 
Sonthern Georgia; northern Florida. 
Type locality, Suwanee River, Fla. 
Umo klemianus Lea, Pr. Am. Phil. Soc., V, 1852, p. 251; Tr. 
Ate Epil SOG, ...;) 0o52, ps 205, pl. xvity fig. 18; Obs:, V, 
1852, p. 21, pl. xvi, fig. 18—Rerve, Conch. Icon., XVI, 
1864, pl. 11, fig. 6. 
Margaron (Unio) kleinianus Lea, Syn., 1852, p. 20; 1870, p. 
30. 
Quadrula kleiniana Simpson, Syn., 1900, p. 784. 
Unio sparsus Kuster, Conch. Cab. Unio, 1861, p. 252, pl. 
DASNY, fie. 2. 
Generally larger, more elongated, more sculptured and light- 
er colored than Q. infucata. The pseudocardinals do not seem 
to be so irregular or so much split up. But there are interme- 
diates that might almost as well be placed in one species as the 
other. 
Section Fusconara Simpson, 1900. 
Fusconaia SIMPSON, Syn., 1900, p. 784. 
Fusconaja ORTMANN, Ann. Car. Mus., VIII, 1912, p. 240. 
Shell round, rhomboid, triangular, or short elliptical, with a 
moderate posterior ridge; beaks high and full, curved inward 
and forward, sculptured with a few coarse, parallel ridges, 
which curve upward behind ; epidermis dark ; surface not sculp- 
tured ; hinge plate of moderate width; pseudocardinals strong ; 
nacre white. salmon or purple. 
