(2) Belogona.—Female genital system with dart sac and mucus gland. Helix [restricted] (with sections Arionta, Campylaea, Chilotrema, Pomatia, Macularia, Tachea, Iberus, Leptaxis, Eulota, Fruticicola, Xerophila; Dorcasia, Acusta, Plectotropis, Aegista, Cathaica, Satsuma, Euhadra; Lysinoe), Gonostoma, Leucochroa, Allognathus, Cochlostyla, Polymita, Hemitrochus (with sections Plagioptycha, Dialeuca, Coryda, Jeanerettia), Glyptostoma, Acanthinula, Vallonia.
(3) Teleophalla.—Female system without accessories, male with flagellum and appendix on penis; no epiphallus. Sagda, Cysticopsis.
(4) Epiphallophora.—Female system without accessories, male with epiphallus on penis; no appendix. Caracolus (with sections Lucerna, Dentellaria, Isomeria, Labyrinthus, Eurycratera, Parthena, Polydontes, Theliodomus, Cepolis), Camaena (incl. Phoenicobius), Obba, Chloritis (incl. Hadra), Papuina, Planispira (subg. Cristigibba).
Fig. 295.—Example of the Macroön group of Helix. Helicophanta Souverbiana Fisch., Madagascar, showing large embryonic shell. × ⅔.
(5) Haplogona.—All accessory organs absent, jaw soldered into one piece. Polygyra (incl. Daedalochila, Triodopsis, Mesodon, Stenotrema), Endodonta (incl. Libera, Charopa, Gerontia, Therasia, and others), Patula, Trochomorpha, Anoglypta.
(6) Polyplacognatha.—All accessory organs absent, jaw composed of 16–24 separate plates. Punctum, Laoma.
Fig. 296.—Odontostomus pantagruelinus Moric., S. Brazil. × ½.
Genera of doubtful position: Strobilops, Ampelita, Pedinogyra, Polygyratia, Macrocyclis, Solaropsis.