ANODONTITRS I405 



Anodon lato-marginatus Sowrj^ry, Conch. Icon., XVII, 1867, 



pi. II, fig. 3. 

 Anodon lati-mari^inata Catlow and Reeve, Conch. Nom., 



1845, P- 67. 

 Anodonta lati-marginata Strobkl, Mat. Mai., R. i, 1874, p. 



67. 

 Anodonta membranacea d'ORiucNY, Voy. \m. Men, 1843, p. 



616, pi. LXXIX, fig-. II. 

 Anodonta solida Kuster, Conch. Cab. Ano., 1853, p. 50, pi. 



xii^ fig. I, 



Anodonta nnignayensis Lea, Pr. Ac. N. Sci., Phila., IV, i860. 



p. 92 ; Jl. Ac. N. Sci. Phila., V, 1863, p. 393, pi. xlviii, fig. 



302; Obs., X, 1863, p. 29, pi. XI.VI11, fig. 302.— C1.ESSIN, 



Conch. Cab. Ano., 1874, p. 114, pi. xxxviii, figs, i, 2. — Sow- 



ERBY, Conch. Icon., XVII, 1870, pi. xxx, fig. 121. 

 Margaron (Anodonta) nnignayensis Lea, Syn., 1870, p. 83. 

 Coluniba uruguaycnsis Pjetkl, Conch. Sam., Ill, 1890, p. 188. 

 Anodonta sinuosa Clessin, Conch. Cab. Ano., 1873, p. 90, pi. 



XXII, figs. I, 2. 

 Anodonta serpentina Ci.essin, Conch. Cab. Ano., 1876, p. 22^, 



pi. LXXV, figs. 2, 3. 



I have no doubt but that Lamarck's Anodonta patagonica 

 is the same as Lea's A. lato-marginata. The description of 

 the former is very brief, but the figures in the Encyclopedia 

 Methodique, which are referred to, represent the species very 

 accurately. The shell is represented in the external view as 

 having concentric bands and certain specimens in the large 

 series that I have seen are thus banded. 



Lea's type of Anodonta urnguayensis, an old worn shell, is 

 the only one in the collection, save a few very young that are 

 doubtfully the same. It is a little more inflated than most 

 specimens that are called lato-marginata, and may possibly be 

 distinct. 



Var. felix (Pilsbry). 



Similar in form to the type, but the epidermis is light yel- 

 lowish-green, painted with short, radiating, dichotomous or 

 simple lines, or narrow V's of green with two green rays on 



