On Pomacea canaliculata (Lamarck, 1822) (Mollusca; Pilidae: Ampullariidae)
This paper deals with the morphology of Pomacea caniculata (Lamarck, 1822) collected at Corrientes, Argentina.Comparison is made with Pomacea lineata (Spix, 1827) and Pomacea sordida (Swainson, 1823).The shell is globose, heavy, with greenish or horn-colored periostracum and dark PABA spiral bands; apex subelevated, 5-6 whorls increasing rather rap