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| | Apple snail (Ampullariidae) genera and species. |
 | | But according to Dall (1904) his work was published anonymous, was not for sale, didn't bear the name of the author or the name of the publisher and is invalid under the rules of nomenclature. |
 | | This genus description did fulfil the requirements of the nomenclature rules, although it was later restricted to the Old World Ampullariidae, with the exception of the West African genera Saulea (Gray, 1867) and Afropomus (Pilsbry and Bequaert, 1927). |
 | | However, Dall (1904) designated Helix ampullacea as the type species of Pila rendering Ampullaria Lamarck, 1799 a junior objective synonym of Pila Röding, 1798, despite his designation of Nerita urceus Müller, 1774 as the type of Ampullaria. |
| www.applesnail.net /content/species_genera.htm (1134 words) |
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