Rhytididae Pilsbry, 1893

Herbert, D. G. & Moussalli, A., 2010, Revision of the larger cannibal snails (Natalina s. l.) of southern Africa - Natalina s. s., Afrorhytida and Capitina (Mollusca: Gastropoda: Rhytididae), African Invertebrates 51 (1), pp. 1-1 : 21-22

Family Rhytididae Pilsbry, 1893

Rhytididae Pilsbry, 1893 [February], in 1892–93: 135.

Paryphantinae Godwin-Austen, 1893 [October]: 8; Solem 1959: 147 (Paryphantidae).

Occirheneidae Iredale, 1939: 73.

Diagnosis: Shell globose to discoidal, minute to very large; occasionally reduced and shield-like; aperture lacking dentition; umbilicus open, except when shell is reduced

( Schizoglossa ). Pulmonary anatomy sigmurethrous, primary ureter closed, secondary ureter generally open; distal genitalia lacking accessory structures, epiphallus often present, flagellum usually absent; foot lacking peripodial groove, sole undivided, caudal pore and appendage absent; suprapedal gland well developed, lying above pedal musculature; jaw absent, radula beloglossan; buccal mass elongate, large and muscular; head and neck elongate. Carnivorous.