214 Journal of the Asiatic Society of Bengal. (June, 1913.] 
be hides tig as sie proaiged representative of the European 
fauna. No one of them can be stated to be either Oriental or 
Ethiopian in ane and they afford no evidence, except in the 
peculiar colouration of the race of H. lineata found in the Lake 
of Tiberias but also in the R. Barada, of long-continued isolation. 
The species are lacustrine and not related to marine forms. 
ae Sioa SP ieee Ne oe Ra Sa 
