ANOnONTlTES 1439 



Anodonta forbesiana T^f.a, Pr. Ac. N. Sci. Phila., R'', i860, p. 



92; Jl. Ac. N. Sci. Phila., Y, 1863, P- 393» pl- xl,vii, fig. 30X ; 



Obs., X, 1863, p. 29, pl. xi.vii, fig. 301. — Clessin, Conch. 



Cab. Ano., 1873, p. T15, pl. xxxiv, figs, i, 2. 

 Anodon forbesianus So^^'r•:R^,v. Conch. Icon., XVII, 1870, pl.. 



XXX, fig. 119. 

 Margaron (Anodonta) forbesiana Lea, Syn., 1870, p. 81. 

 Glabaris forbesianus Simpson, Syn.. 1900, p. 927. 



More trapezoidal than nmbonatns : the base is not so straight ; 

 the epidermis is brownish, with faint, dark bands, instead of 

 mud colored, and it is more squarely truncate behind. It 

 gapes slightly behind, and widely at the anterior base. 



Anodontites MORiCAxnii (Lea). 



Shell long trapezoid, scarcely inflated, rather thin, gaping 

 at the front, the anterior base and the hinder end, 'inequi- 

 lateral ; beaks moderately elevated and inflated ; hinge line 

 straight or slightly incurved, developed into a low wing be- 

 hind ; anterior end rounded, narrowed a little and cut away 

 somewhat below ; base curved, straight or even a little in- 

 curved medially ; posterior end with a long, oblique truncation 

 above, narrowly rounded below : surface with uneven, concen- 

 tric sculpture, the ridges sometimes disposed to be granulous ; 

 epidermis shining, pale ashy-green, darker on the dorsal slope ; 

 nacre bright bluish, silvery and iridescent ; muscle scars shal- 

 low. 



Length 117, height yo. diam. 1^%, mm. 



Brazil. 

 Anodonta inoricandii Lea, Pr. Ac. X. Sci. Phila., IV, i860, p. 



90; Jl. Ac. N. Sci. Phila.. \\ 1863. p. 396, pl. xijx, fig. 303: 



Obs., X, 1863. p. 32. pl. xEix, fig. 303. — Clessin, Conch. Cab. 



Ano., 1874, p. 114, pl. xxxvTii, figs. 3, 4. 

 Anodon moricandii Sow^erby. Conch. Icon., XVII, 1870, pL 



xxxii, fig. 126. 

 Margaron (Anodonta) moricandii Lea, Syn., 1870, p. 81. 

 Glabaris moricandii von Ihering, Arch, fiir X'^at., 1893, p. 115. 



— Simpson, Syn. 1900, p. 927. 



