Efiiiptian MoUiisca 



107 



the Fayum. There are records of its occurrence in Lake Mariui 

 and in the Mahmoudieh Canal near Alexandria. 



Fig. 16. —Amimllaria ovata. (x 1.) 



Lanistes holteni, Chemnitz, 1786. 

 Fairly frequent in the Marg Canal in and beyond the village. 

 Some examples dredged from the ferry across the Sweet Water 

 Canal in the town of Ismailia. 





Fig. 77. — Lanistes holteni. (x 1.) 



It is said by Pallary to occur along the whole course of the Nile. 



Valvatid^. 

 Valvata niloUca, Jickeli, 1874. 

 This minute form occurs in numbers on dead leaves in the 

 ponds in the Zoological Gardens, Giza. Examples were also 

 collected from the large Giza Canal. It occurred only very occa- 

 sionally at Marg. 



