PigAT, 
Figs. 1-6. Potamides fuscatus (Gmelin) and transitions to the form radula 
(Gmelin). Mouth of the Moanda River. Natural size. 
Figs. 7-9. Potamides fuscatus form radula (Gmelin). Bulabemba Island, near 
the lighthouse. Natural size. 
Figs. 10-11. Potadoma gruptcconus Pilsbry and Bequaert. Type (Fig. 10) 
and paratype. X14. Ganda Sundi. 
Figs. 12-13. Potadoma schoutedeni Pilsbry and Bequaert. Type (Fig. 12) and 
paratype. 1)4. Lukula. 
