Clench, W.J. 1929. Some records and descriptions of new fresh-water molluscs from Cameroon. Bulletin of the Museum of Comparative Zoology 69: 117-123. Available electronically.
‘Gmelin’ Clench, 1929. Bull. MCZ 69: 121.
(misidentified reference to Venus hermaphrodita Gmelin, 1791)
Clench, 1929. Bull. MCZ 69: 122, pl. 1, fig. 1-2.