MYCETOPODA 1457 



Von Martens, (!. c), considers this to be the same as A. 

 inccqnei'ahns Lea. If correct, it would have priority. 

 Anodonta carinata Dunkkr, Mai. Bl., \\ 1858, p. 225. 



Colombia. 

 Anodonta cornea Phiijppi, Zeits. fiir Mai., \', 1848, p. 130. — 



VON Mabtens. Biol. Cent. Amer., Moll. 1900, p. 535. 



Nicaragua. 



Von Martens, (1. c), states that this species resembles A. 

 incrajdvalvis Lea, but, on account of certain discrepancies, he 

 "dare not identify it with Lea's species." 

 Anodonta giulloini H. and A. Adams, Gen. Rec. Moll., H, 



1857, p. 502. Credited to Recluz. 

 Anodonta f^aphos Raeinesouk. Atl. Jl. and Friend., 1832, p. 



134. 



Parana River. 

 Anodon pictus Swainson, Ex. Conch., 2d ed., 1841, p. 139. 

 Anodonta u-allisi Mousson, Mai. Bl., XVL 1869, p. 188. 

 Anodonta hergi von Ihering. 



Where ' 



Genus MYCETOPODA d'Orbigny, 1835. 



Mycetopoda d'ORiuCNV, Guer. Mag., 1835, p. 41- 

 Mycetopus d'ORniGNy, Voy. Am. Mer., 1847. p. 600. 



Shell thin, elongated, truncate above behind, with a low, 

 posterior ridge and rather flat, smooth or slightly concentric- 

 ally wrinkled beaks ; epidermis smooth, shining, pale greenish- 

 vellow or brownish, rayless ; hinge line long, straight, edentu- 

 lous or showing faint traces of denticles under a glass beneath 

 the nacre : nacre soft, bluish-white and iridescent : muscular 

 impressions faint, irregular, the smaller anterior scar above 

 the larger one ; beak cavities shallow. 



Animal having very long gills, the inner nuich the larger, 

 united to the abdominal sac throughout their whole length : 

 palpi large, round below, projecting very slightly behind, and 

 attached along the whole length of the straight upper border; 

 mantle very thin, slightly thickened at the edges ; branchial 

 opening closed below into a short, papillose siphon, and sep- 



