34 Journal of the Asiatic Society of Bengal. (January, 1913. 
into any part of the Jordan system, and all the families that 
do occur have a wide range in different geographical regions: 
except the versatile Siluridae and Blenniidae, they are essen- 
tially freshwater fish. The Cyprinidae are found all over the 
world except in South America and Australasia ; the Cyprino- 
dontidae are common in ull warm and tropical parts of both 
Hemispheres, except in Australasia and the east of Asia. One 
genus (Htroplus) is found in India and Ceylon. The Siluridae 
include many freshwater species in their ranks, and some of the 
blennies frequent brackish, a few fresh water. The Galilean 
species are among these few, in Europe as well as in Palestine. 
There is, therefore, no marine element in the fish-fauna of the 
Lake of Tiberias, unless Blennius lupulus and B. varus be 
regarded as‘comparatively recent immigrants from the Medi- 
terranean Sea, a view that has little evidence to support it. 
re is no endemic genus of. fish in the Jordan system. 
Perhaps the most interesting genera that have been found in 
this system are those that belong to the family Cichlidae, 
=~ 
sacra) is quite distinct from the Nilotic one. In the opinion of 
gascar as well as in continental Africa. Chromis is essentially 
a tropical African genus, occurring on both sides of the con- 
tinent and making its way down the Nile and up its various 
Introduction to the Siudy of Fishes, p- 229 (1880). Mr. Bou- 
peci: ere ¢ Hemichromis 
toire naturelle d. 
e Lyon 
2 Pishes of the 
Nile, p. 460. 
