PLATE XV 
Figs. 1-2. Pila congoensis amplior Pilsbry and Bequaert. Type, Nouvelle 
Anvers (Fig. 2); immature paratype, Medje (Fig. 1). 
Figs. 3-4. Pila congoensis Pilsbry and Bequaert. Stanleyville. Type (Fig. 4) 
and immature paratype. 
Figs. 5-6. Pala microglypta Pilsbry and Bequaert. Stanleyville. Type (Fig. 
6) and immature paratype. 
