98 Beport of the Bilharzia Mission in Egjjpt, 1915 



Helix (Cochlicella) harhara, Linnaeus, 1758. 

 Common in the Zoological Gardens, Giza, associated with 

 Hygromanes ohstructa. 



Fig. bl.— Helix harhara. ( x 2.) 



Recorded by Pallary as not uncommon around Alexandria. 



Eremina desertorum, Forskal, 1775. 

 Common on the Mokattam Hills east of Cairo. Is said to occur 

 over the whole Desert of North Africa from South Tunis to the 

 Red Sea. This species has a remarkable capacity of withstanding 

 adverse conditions. A specimen stuck down on a tablet in the 

 British Museum, 1816, was found to be alive four years later, and 

 survived two more years. The Rev. A. H. Cooke kept ten examples 

 alive in a tin box without food for eight years. 



^*::; 



Fig. 58. — Eremina dcscrtoruvi. (x 1.) 



An additional point of interest attaches to this species from the 

 fact that in all probability it was the one upon which the survivors 

 of H.M.S. " Tara" are reported to have fed during their captivity 

 with the Senussi near Solium prior to their rescue by the Duke 

 of Westminster's armoured car detachment in the spring of 1916. 



PUPID^E. 



Leucochiloides sennaaricus, Pfeiffer, 1855. 



4 I 



Fig. 5d.— Leucochiloides sennaaricus. ( x 3.) 



Shells only, recovered from the fine mud dredged from the 

 artificial ponds in the Zoological Gardens at Giza. Not frequent. 



