(Fig. 4a)
Notomastus fauvelii Day, 1955: 422, fig. 3h–l; 1967: 597, fig. 28.1g–l.—García-Garza & de León-González 2015: 183, fig. 3df. Notomastus giganteus (not Moore) Fauvel 1932: 194 fide Day 1967: 597.
Type material: * Holotype (BMNH 1961.16.73-74).
Type locality: South Atlantic Ocean, South Africa, Knysna Estuary, – 34°18’57”S, 33°26’ 44”E, sandy mud, intertidal.
Records: Only known from the type locality.