106 Beport of the Bilharzia Mission in Egypt, 1915 



Like other operculated forms it can survive for a considerable 

 period without water. 



Fig. 74. — Vivipara nnkolor, (x l\.) 



There are a number of varieties, based upon colour and ridges 

 on the shelL 



Cleopatra huUmoides, Olivier, 1804. 



Widespread in distribution and of common occurrence. Found 

 in numbers in mud from canals, at the Zoological Gardens, at 

 Marg, and elsewhere. 



'h # 



Fig. 75. — Cleoixitra bulimoides, (x li.) 



Stated by Pallary to occur througliout the course of the Nile. 

 We distinguished specimens of this species provisionally from 

 the succeeding form by the brown spiral marking of the shell. 



Cleopatra cyclostomoldes, Kiister, 1852. 

 Common and found in association with the preceding form, 

 from which we distinguish it empirically by its greenish uniform 

 coloration. 



There appears to be a number of varieties of shell types in 

 Cleopatra hiilimoides. 



Ampullarid/E. 

 Ampnllaria ovata, Olivier, 1804. 

 Found only, but in considerable numbers, in the Bahr Yusef in 



