NO. 1205. Sl'NOPSIS OF THE NAIADES SIMPSOX. 911 



tMONOCONDYLjEA GUARAYANA d'Orbigny. 



* Monocondyltea yuarayana D'ORBIGNY, Guer. Mag., 1835, p. 38; * Voy. Am. Mer., 

 1843, p. 614, pi. LXVIII, figs. 4-5. * H. and A. ADAMS, Geii. Rec. Moll., II, 1857, 

 p. 501 ; III pi. cxvn, fig. 3. * CHENU, Man., 1859, II, p. 145, fig. 715. 

 " P.ETEL, Conch. Sam., Ill, 1890, p. 174. 



* Margarita (Monocondylwa) yuarayana LEA, Syn., 1838, p. 28. 



* Unio yuarayana HANLEY, Test. Moll., 1842, p. 213; * Biv. Shells, 1843, p. 213, pi. 



xxn, fig. 14. * SOWERBY, Conch. Icon., XVI, 1868, pi. xcvi, fig. 524. 

 * Maryaron (Monocondyliva) yuarayana LKA, Syu., 1852, p. 45; 1870, p. 73. 



Bolivia. 



MONOCONDYL-^A INERME Spix. 



* Aplodon inerme SPIX, Test. Fluv. Bras., 1827, p. 32, pi. xxv, figs. 1-2. * VON 



IHERING, Arch, fur Nat.,1890, p. 126, pi. ix, figs. 1-3. 



South Brazil. 



tMONOCONDYL^A PARCHAPPII d'Orbigny. 



* Moncondylcea parcliappii D'ORBIGNY, Guer. Mag., 1835, p. 38; * Voy. Am. Mer., 



1843, p. 615, pi. LXVIII, figs. 1-3. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, 

 p. 501.* P^TEL, Conch. Sam., Ill, 1890, p. 174. 



* Margarita (Monocondylcva) parchappii LEA, Syn., 1838, p. 28. 



*.Fnto parchappii HANLEY, Test. Moll., 1842, p. 212; * Biv. Shells, 1843, p. 212, pi. 

 xxn, fig. 13. * CATLOW and REEVE, Conch. Nom., 1845, p. 62. 



* Maryaron (Monocondyhea) parchappii LEA, Syn., 1852, p. 45 ; 1870, p. 73. 



* t Monocondylcea pazii LEA, Pr. Ac. N. Sci. Phila., X, 1866, p. 34; * Jl. Ac. N. Sci. 



Phila., VI, 1868, p. 273, pi. xxxvi, fig. 88 ; * Obs., XII, 1869, p. 36, pi. xxxvi, fig. 

 88. * CLESSIN, Conch. Cab. Ano., 1876. p. 251, pi. LXXIX, figs. 6-7. *P.ETEL, 

 Conch. Sam., Ill, 1890, p. 174. 



* Maryaron (Monocondylica) pazii LEA, Syn., 1870, p. 73. 



Argentina. 



i MONOCONDYLiEA PARAGUAYANA d'Orbigny. 



* Monocondyhva paraguayana D'ORBIGNY, Guer. Mag., 1835, p. 37. * SOWERBY, 



Conch. Man., 1839, fig. 149. * D'ORBIGNY, Voy. Am. Mer., 1843, p. 612, pi. LXX, 

 figs. 5-7. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 501. * CLESSIN, 

 Conch. Cab. Ano., 1876, p. 245, pi. LXXVIII, figs. 1, 2. * P.KTEL, Conch. Sam., 

 Ill, 1890, p. 174. 



* Margarita (Margaritana) paraguayana LEA, Syn., 1838, p. 27. 



* Unio paraguayana HANLEY, Test. Moll., 1842, p. 212 ; * Biv. Shells, 1843, p. 212, pi. 



xxn, fig. 17.* SOWERBY, Conch. Icon., XVI, 1866, pi. LII, fig. 273. 



* Maryaron (Monocondylaa) paraguayana LEA, Syn., 1852, p. 45; 1870, p. 73. 



* Unio paraguayanus CATLOW and REEVE, Conch. Nom., 1845, p. 62. 



* t Monocondylcea minuana D'ORBIGNY, Gner. Mag., 1835, p. 37; *Voy. Am. Mor., 



1843, p. 612, pl.LXX, figs. 8-10.* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, 

 p. 501. *P,ETEL, Conch. Sam., Ill, 1890, p. 174. 



* Margarita (Margaritana) minuana LEA, Syn., 1838, p. 28. 



* Maryaron (Monocondyla'a) minuana LEA, Syn., 1852, p. 45; 1870, p. 73. 



* Unio minuanus HANLEY, Test. Moll., 1842, p. 213; *Biv. Shells, 1843, p. 213, pi. 



xxn, fig. 18.* SOWERBY, Conch. Icon., XVI, 1868, pi. xci, fig. 497. 



Rio de la Plata drainage. 



