918 PROCEEDINGS OF THE NATIONAL MUSEUM. 



* Margaron ( Anodonta) wymanii Lea, Syn., 1870, p. 80. 



'^ Anodon ivymani Sowerby, Conch. Icon., XVII, 1870, pi. xxx, fig. 117. 



Uruguay River, South America. 



t GLABARIS SIRIONIS d'Orbigny. 



* Anodonia sirionis d'Orbigny, Mag. Zool., 1835, p. 40.— *Hanley, Test. Moll., 



1842, p. 221; *■ Biv. Shells, 1843, p. 221.—* d'Orbigny, Voy. Am. Mer., 1843, 

 p. 615, pi. LXXiv, figs. 4-6; lxxx, figs. 1-4.— *H. and A. Adams, Gen. Eec. 

 Moll., II, 1857, p. 504.— * Clessin, Conch. Cab. Anc, 1874, p. 128, pi. XLi, 

 figs. 1, 2.— *Pjetel, Conch. Sam., Ill, 1890, p. 184. 



* Margarita {Anodonta) sirionis Lea, Syn., 1838, p. 31. 



* Aiiodon sirionis Catlow and Reeve, Conch. Nom., 1845, p. 68. 

 ''Margaron (Anodonta) sirionis Lea, Syn., 1852, p. 51; 1870, p. 82. 

 " Anodonta ferrarisii d'Orbigny, Guer. Mag., 1835, p. 40. 



Rio de la Plata 



t GLABARIS PAZII Lea. 



* Anodonta pazii Lea, Pr. Ac. N. Sci. Phila., X, 1866, p. 35 ; * Jl. Ac. N. Sci. Phila., 



VI, 1868, p. 274, pi. xxxvi, fig. 87; *0b8., XII, 1869, pi. xxxvi, fig. 87.— 



* Clessin, Couch. Cab. Anc, 1874, p. 139, pi. xLiii, figs. 3, 4. — * PiETEL, Conch. 

 Sam., Ill, 1890, p. 183. 



* Margaron {Anodonta) pazii Lea, Syn., 1870, p. 81. 



South America. 



t GLABARIS RUBICUNDUS Lea. 



"" Anodonta rubicunda Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 92; * Jl. Ac. N. Sci. 



Phila., V, 1863, p. 392, pi. xlvi, fig. 299; ^ Obs., X, 1863, p. 28, pi. XLVi, fig. 



299.—* Clessin, Conch. Cab. Ano., 1876, p. 106, pi. xxxii, figs. 5, 6. — * P^tel, 



Conch. Sam., Ill, 1890, p. 184. 

 *Anodon ruUcundus Sowerby, Conch. Icon., XVII, 1870, pi. xxx, fig. 118. 



* Margaron {Anodonta) rubicunda Lea, Syn., 1870, p. 75. 



Uruguay River, South America. 



t GLABARIS ROTUNDUS Spix. 



* Anodon rotundus Spix, Test. Fluv. Bras., 1827, p. 28, pi. xx, figs. 2-4. 



* Anodon rotunda Kuster, Conch. Cab. Ano., 1853, p. 33, pi. viii, fig. 1. 



* Margaron {Anodonta) rotunda Lea, Syn., 1870, p. 81. 



* Glabaris rotunda voN Ihering, Arch, fiir Nat., 1893, p. 59. 



* t Anodonta vailliaudii Lea, Pr. Ac. N. Sci. Phila., IV, 1860, p. 308 ; * Jl. Ac. N. Sci. 



Phila., V, 1863, p. 395, pi. xlv, fig. 297; *Obs., X, 1863, p. 31, pi. XLV, fig. 297.— 



* Clessin, Conch. Cab. Ano., 1873, p. 105, pi. xxxii, figs. 3, 4. — * P^etel, 

 Conch. Sam., Ill, 1890, p. 177. 



* Anodon cailliaudi Sowerby, Conch. Icon., XVII, 1867, pi. xii, fig. 38. 



* Margaron {Anodonta) cailliaudii Lea, Syn., 1870, p. 81. 



Brazil. 



GLABARIS MEMBRANACEUS Maton.i 



* Mytilus menibranaceus Maton, Tr. Linn. Soc. Loud., 1811, p. 329, pi. xxiv, figs. 11, 



12. 



1 It is difficult to tell what this is, but I believe it to be some species of Glabaris, 

 from the fact that Maton says that the hinge is edentulous. The figure (11) plainly 

 shows it to be destitute of radial beak sculpture, though the umbo is perfect. The 

 specimens figured are evidently young. 



