104 Beport of tlie Bilharzia Mission in Egypt, 1915 



Physa siihopaca, Lamarck, 1841. 

 Fairly common in a small irrigation canal in the public gardens 

 south of the outflow branch of the Sweet Water Canal passing 



Fig. 70. — Physa snbopaca. 



through the town of Ismailia. A few examples got in Giza Canal. 

 Found at Ismailia also by Letourneux, at Matarieh by Teilhard, 

 and around Alexandria by Lhotellerie. 



LlMNAEID^. 



Limncea cailliaudi, Bourguignat, 1883. 

 At Marg, but not in very large numbers. 



# 



Fig. 71. — Limncva cailliaudi. (x IJ.) 



Letourneux obtained this species on the shores of Chonbrah 

 Island, a few miles to the north of Cairo. A small variety has 

 been found at Alexandria and Ismailia. 



LimncBa alexandrina, Bourguignat, 1883. 

 Common in the Zoological Gardens, in the fountain of Shep- 

 heard's Hotel garden, and in tlie ponds in Esbekieh Gardens, 



i 4 



Fig. 72.— Liiimcpa, sp. inq. (x Ih.) 



Cairo ; and in collections of water generally where there is con- 

 siderable weed. 



