402 INDIAN CYPRINID#. Sarcoborine. 
with the insects they pursue, and the king-fishers and wading birds which 
they attract and support, a very lively and interesting part of the scene, to 
those whose attention has been once directed to the circumstance. 
IV.—Gren. LEUCISCUS. 
The Adles, or white fishes, were distinguished by Klein, a naturalist of the 
last century, by the following characters—“ Dorsal and anal short ; neither 
spines nor cirri, and nothing particular about their lips.” Cuvier, however, 
observes that species with cirri occur, and instances Cyp. danrica, Buch., and 
although I have referred that species to the Perilamps, still I have replaced it 
by Cyp. cocsa, Buch., as well as Cyp. elanga, id, both of which have cirri. 
Cuvier in addition to Klein’s characters distinguished Leuciscz into smaller 
divisions, according to the position of the dorsal fin, which he remarks is not 
always clear. The genus, he observed, is rich in species; but this is the case 
with all ill defined groups, it being often as difficult to determine what does 
not, as what really belongs to them. 
LeEvuciscus Proprius, J. M. 
Dorsal and anal small, without spines, the last ray of the former placed 
anteriorly to the first of the latter fin, so as to bring it at least opposite the space 
between the ventrals and anal, if not opposite to the ventrals. The sides are 
white and silvery, presenting little variety of colour; the scales are covered 
with a pearly pigment; the mouth is either horizontal or directed upward; the 
lower jaw is armed with one or more blunt prominences, or where these are 
wanting, its apex is received into a fissure in the upper jaw. 
The stomach and intestines are scarcely longer than the body, the inter- 
maxillaries are not protractile. 
