GILL] NOTEWORTHY EXTRA-EUROPEAN CYPRINIDS 339 
Puntius, although not very like any of the other species. Unlike 
the typical barbels, it has no barbels whatever. It sometimes reaches 
a length of a meter (40 inches) and may attain a weight of ten or 
eleven kilograms. It is one of the commonest fishes of Lake Tan- 
ganyika and by the natives named M’Biriki. In the spawning season 
it runs up the rivers discharging into the lake and manifests as much 
activity as a salmon, leaping up falls five to seven feet high. It 
especially courses up the river Lu-Fuko, a very rapid stream inter- 
rupted by many falls, in great numbers during January to May and 
Fic. 101.—Barbus tropidolepis. After Boulenger. 
remains therein several months. It then gives employment or food 
to several villages nearby. Large numbers are caught in nets— 
sometimes as many as seventy at one time. The fish is considered to 
be “ excellent ”’ and, indeed, one of the-very best of all the numerous 
fishes of Lake Tanganyika ; it is not fished for, however, in the lake 
itself. 
Three monotypic genera are peculiar to Africa—Leptocypris, 
Chelethiops and Neobola—but they are closely related to Indian 
genera. 
The genus Chelethiops is of special interest on account of the very 
Fic. 102.—Chelethiops elongatus. After Boulenger. 
backward position of the dorsal fin which is mostly over the hinder 
half of the anal fin—in fact as far behind as in the pikes and killie- 
