NO. 1205. SYNOPSIS OF THE NAIAItKS SIMPSON. 923 



GLABARIS MONTEZUMA Lea.' 



* Anodonta montezuma LEA, Pr. Am. Pliil. Soc., II, 1841, p. 31 ; *Tr. Am. Phil. Soc., 



1842, p. 240, pi. xxui, fig. 55 ; * Obs., Ill, 1842, p. 78, pi. xxm, fig. 55.* H. and 

 A. ADAMS, Geu. Kec. Moll., II, 1857, p. 504. *CLESSIN, Conch. Cab. Ano., 

 1876, p. 220, pi. LXXII, figs. 7, 8.* B. H. WRIGHT, Check List, 1888.* P^ETKL, 

 Conch. Sam., Ill, 1890, p. 182. 



* Margaron (Anodonta) montezuma LEA, Syu., 1852, p. 51; 1870, p. 82. 



Central America. 



(Group of Glabaris trapesialis.) 



Shell large, inflated, elliptical, narrower in front, with full, rather 

 prominent beaks, a slight wing on the post dorsal part, and sometimes 

 a small one in front of the beaks ; epidermis smooth, generally uniform 

 olive green; hinge line straight or slightly sinuous; escutcheon large 

 and conspicuous; nacre bluish silvery, sometimes marked with parallel, 

 wavy, dark lines. 



Animal with the marsupiuin filling the inner branchue; gills large, 

 inner the larger ; palpi very large, reniform ; mantle thin, with a wide, 

 thickened edge; branchial opening small, plicate, but not crenulate or 

 papillose; anal opening large, smooth, separated from the branchial by 

 a strong bridga 



T GLABARIS TRAPESIALIS Lamarck. 



* Anodonta trapesialis LAMARCK, An. sans. Vert., VI, 1819, p. 87. 

 *Iri(Una trapesialis D'ORBIGNY, Guer. Mag., 1835, p. 43 3 . 



* Glabaris trapesialis PILSBY, Pr. Ac. N. Sci. Phila., 1896, p. 563. 



* Anodonta trapezialis BLAINVILLE, Man. do Mai. et Conch., 1825, p. 538, fig. 1. 



*DESHAYES, Enc. Meth., II, 1827, p. 147, pi. ccv, fig. 1. *WYATT, Man. 

 Conch., 1838, p. 68, pi. xi, fig. 3. * HAXLEY, Test. Moll., 1842, p. 220; *Biv. 

 Shells, 1843, p. 220.* KUSTER, Conch. Cab. Ano., 1853, p. 31, pi. vn, fig. 4. 

 *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 504. * CLESSIN, Conch Cab. 

 AUG., 1876, p. 235, pi. LXXVII, fig. 5. 



* Anodon trapezialis CROUCH, 111. Int. Laiu., 1827, p. 16, pi. ix, fig. 7. * CATLOW 



and REEVE, Conch. Nom., 1845, p. 68. 



* Margarita (Anodonta) trapezialis LEA, Syn., 1836, p. 53; 1838, p. 31. 



* Margaron (Anodonta) trapezialis LEA, Syu., 1852, p. 52; 1870, p. 82. 



* Columba trapezialis P^ETEL, Couch. Sam., Ill, 1890, p. 188. 



* Anodon giganteus SPIH (part), Test. Fluv. Bras., 1827, p. 27, pi. xix, fig. 2. 



* Anodon gigantea SOWERBY, Conch. Icon., XVII, 1867, pi. vm, fig. 18. 



* Anodonta gig antea VON MARTENS, Mai. Bl., XV, 1868, p. 196. 



* Columba gigantea P^ETEL, Conch. Sam., Ill, 1890, p. 188. 



* 1 Anodon penicillatus GRAY, 3 Pr. Zool. Soc. Lond., 1834, p. 57. *MOLLER, Syn. 



Nov. Gen., 1836, p. 195. 



1 1 have never seen this shell, and can not be positive from the figure and descrip- 

 tion whether it is a Glabaris or an Anodonta. I incliue to think it the former, and 

 that it belongs in this group. 



2 = Anodontite.s trapesialis Lamarck according to d'Orbigny in above, but in Voy. 

 Am. Mer. he says it is not that. 



3 1 have never seen this shell. Dr. Lea believes it to trapesialis Lamarck. 



