922 PROCEEDINGS OF THE NATIONAL MUSED! . VOL.XXII. 



(Group of Glabaria incequivalvis.} 



Shell elliptical, moderately solid and inflated, with a low posterior 

 ridge, slightly produced behind near the base and truncated above the 

 posterior slope; beaks full, smooth; ligament imbedded in a sort of 

 groove which extends to the anterior point of the shell; epidermis 

 slightly roughened, often clothlike and showing the rest periods, having 

 faint radiating lines; nacre bluish, soft, but not brilliant. 



Animal unknown. 



tGLABARIS IN^EQUIVALVIS Lea. 



* Anodonta incequwalvia LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95 ; * Jl. Ac. N. Sci. 



Phila., VI, 1868, p. 292, pi. XLIII, fig. 108; *Obs., XII, 1869, p. 52, pi. XLIII, 



fig. 108.* CLESSIN, Conch. Cab. Ano., 1874, p. 137, pi. XLIV, figs. 7,8. *B. H. 



WRIGHT, Check List, 1888. 



* Margaron (Anodonta) incequivalvisI^EA., Syn., 1870, p. 83. 

 * \Anodonta leniicularis'LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 95; * Jl. Ac. N. Sci. 



Phila,, VI, 1868, p. 290, pi. XLI, fig. 102; *Obs., XII, 1869, p. 50, pi. XLI, fig. 



102. * CLESSIN, Conch. Cab. Ano., 1874, p. 134, pi. XLIII, figs. 5, 6. *B. H. 



WRIGHT, Check List, 1888. * P.ETEL, Conch. Sam., Ill, 1890, p. 181. 



* Margaron (Anodonta) lenticularis LEA, Syn., 1870, p. 81. 



* Anodon gJabrus SOWERBY, Conch. Icon., XVII, 1870, pi. xxv, fig. 97. 



* Anodon monlezianus SOWERBY, Conch. Icon., XVII, 1870, pi. xxxvi, fig. 145. 



* Anodonta viridana CLESSIN, Conch. Cab. Ano., 1876, p. 226, pi. LXXV, fig. 5. 



*P^ETEL, Conch. Sam., Ill, 1890, p. 186. * FISCHER and CROSSK, Miss. Sci. 

 Pt. 7, II, 1894, p. 521. 



Lake Nicaragua ; Mexico. 



tGLABARIS GRANADENSIS Lea. 



* Anodonta granadengis LEA, Pr. Ac. N. Sci. Phila., XII, 1868, p. 96; * Jl. Ac. N. Sci. 



Phila., VI, 1868, p. 288, pi. XLI, fig. 100; *Obs.,XII, 1869, p. 48, pi. XLI, fig. 

 100. * CLESSIN, Conch. Cab. Ano., 1874, p. 134, pi. XLIV, figs. 3, 4. *B. H. 

 WRIGHT, Check List, 1888. * P^ETEL, Couch. Sam., Ill, 1890, p. 180. 

 *Margaron (Anodonta) granadenais LEA, Syn., 1870, p. 81. 



Lake Nicaragua, Central America. 



tGLABARIS TRAUTWINIANUS Lea. 



* Anodonta trautwiniana LEA, Tr. Am. Phil. Soc., X, 1852, p. 287, pi. xxvi, fig. 48; 



* Obs., V, 1852, p. 43, pi. xxvi, fig. 48. 



* Margaron (Anodonta) trautwiniana LEA, Syn., 1870, p. 81. 



* Anodon trautwinianas SOWERBY, Conch. Icon., XVII, 1870, pi. xxxm, fig. 134. 



* Margaron (Anodonta) troutwiniana LEA, Syn., 1852, p. 51. 



* Anodonta troutwiniana H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 503. 



* CLESSIN, Conch. Cab. Ano., 1874, p. 112, pi. xxxvi, figs. 1, 2. 

 Concb. Sam., Ill, 1890, p. 186. 



* I Anodon oratus SWAINSON, Ex. Conch., 1841, pi. xxxvi. 

 f Anodonta carthagena , Who? Where? 



Cartagena, Colombia. 



