PZ.S,1906,vol.I.Pl 



X. 



T^t- ^ , f 



13 



14- 



+ 



16 



AH, Seai-le, del et lilk 



MOLLUSCA FROM LAKES 



■^« 19 



Bale & Darnels so-a l}-^ 



TANGANYIKA & VICTORIA. 



nap. 



