Pomacea gigas (Spix, 1827)

On river bank, Madre de Dios River, Puerto Maldonado, Peru, August, 1986

(140 mm.) and it holds 14 oz (420 mL) of water

Ampullaria gigas Spix, 1827 (plate 1 vol. 10 Conchologia Iconica; Reeve, 1856)