1436 ANODONTlTES 



Var. siiialoeiisis (Crosse and Fischer). 



Subcompressed, epidermis shining, thin, pale olivaceous-fus- 

 cous, scarcely radiate; nacre pale salmon-rose with white bor- 

 der. 



Length 106, height 52, diam. 36 mm. 



Rio Presidio. Sinaloa, Mexico. 

 Anodonta glanca var. sirialoensis Crosse and Fischer, Jl. de 



Conch., XXXr. T883, p. 219. 

 Glabaris glaucus var. sinaloensis Simpson, Syn., 1900, p. 926. 

 Anodon glaiiciis Sowerby, Conch. Icon., XVIT, 1870, pi. xxvii, 



fig. 105. 

 Anodonta ciconia Carpenter, Maz. Shells, 1857, p. 117. — 



Fischer and Crosse, Miss. Sci., II, 1894, p. 534, pi. lxxviii, 



figs. 2-2a.— VON Martens, Biol. Cent. Amer., Moll., 1900, 



P- SZ^^' P^- -"^LT. fig. 4. 



Possibly worthy of a varietal name. There is a single valve 

 from "New Granada" contributed by Gibbon, in the Lea Col- 

 lection, which agrees pretty closely with the description of 

 Crosse and Fischer. 



Anodontites UMr.ONATus (Simpson). 



Shell irregularly long rhomboid, inflated, somewhat inequi- 

 lateral : thin ; beaks enormously large, full and high ; hinge line 

 lightly curved : anterior end rounded, angled above ; base 

 slightly incurved in the middle; posterior end oblic[uely trun- 

 cate above, squarely truncate below ; posterior ridge widely, 

 faintly double ; surface with strong growth lines ; epidermis 

 mud-colored ; nacre white. 



Length (of figure) 146, height 90 mm. 



Locality unknown. 

 Anodon ciconia Sovveri!Y (part). Conch. Icon., XVII, 1870, 



pi. XXIX, fig. 115'^ 

 Glabaris umbonatus Simpson, Syn., 1900, p. 926. 



S^owerby has given two figures of what he calls Anodon 

 ciconia Gould. One of these is probably a young A. trapesi- 

 alis, the other is from a large shell of a totally difl:'erent species. 



