TERRESTRIAL AND FLUVIATILE MOLLUSCA. 183 



31. Helix obstructa. Fer. Tabl. Syst., p. 69. 

 Phoenician plain. 



32. Helix soUtudinis. Bourg. Test. Noviss. Or., p. 15. 

 Coele Syria. 



II. Helix bargesiana. Bourg. Rev. et Mag. Zool., 1854, p. 15. 

 Northern plains. 



34. Helix pisana. Miill. Verm. Terr, et Fluv. ii., p. 60, No. 255. 

 Plentiful along the coast, to which it is strictly confined. Specimens 



from the north are very richly coloured, while from the district near Gaza 

 they are blanched and colourless in life. 



35. Helix cccspitit))!. Drap. Hist. Moll., p. 92. 



On the coast and the hills near it, in the north of Palestine. 



36. Helix variabilis. Drap. Tabl. Moll., p. 73. 



Very common on Mount Carmel, and with many variations of colour 

 and size. The eastern specimens seem generally to be smaller than those 

 of Europe. Probably several of the species not recognised by us may be 

 referred to varieties of this widely spread and most variable shell. M. de 

 Saulcy does not appear to have met with it, but perhaps distinguished it 

 under some other name. 



I']. Helix lineata. Oliv. Zool. Adriat., p. ^^. 



Found on the hills along the coast. From the study of a long series 

 of intermediate varieties, I should feel disposed to diminish very greatly 

 the number of described species of this variable group. 



38. Helix iiitersecta. Poiret. Coq. Fluv. et Terr, de I'Aisn., p. So. 

 ( = //. langloisiana, Bourg. ?) 



Common near Jerusalem. 



39. Helix hierochuntina. Roth. Malak. Bl, 1855, p. 24. 



Takes the place of the preceding species in the Jordan valley. It 

 is at once distinguished by its red peristome and flattened spire. 



