Cyprinus. gangetic fishes. 277 



III. Division. — Cyprinus bangana. 



Fishes of the genus Cyprinus, with an elevated longitudinal 

 ridge on the middle of the under jaw, as in the genus Mugil, 

 to which these fishes have the utmost resemblance in every 

 thing, except in having no more than one dorsal fin. 



The native name Banggana is common to most species of 

 the genus Mugil, and to those of this division of the genus 

 Cyprinus, which perhaps ought to constitute a distinct genus. 

 I have not been able to trace in authors any fish belonging to 

 it. The six last species of this division are so nearly allied to 

 each other, that several of them are probably merely accidental 

 varieties, although this could not be ascertained without a more 

 careful investigation than it was in my power to bestow. All 

 the species of this division, that I have seen, besides the cha- 

 racteristic marks peculiar to the division and genus, have in 

 common the following circumstances : 



The body is long, and compressed on the sides. The colour is 

 greenish on the back, and silver below. 



The dorsal fin is nearly in the middle of the back, or only a 

 very little behind it, and slopes backward. The last ray is di- 

 vided to the root. The pectoral fins are low down. Each 

 ventral fin has nine rays. The fin behind the vent is short, 

 containing seven or eight rays. 



To this division the 46th species might have been referred ; 

 but the ridge on the lower jaw is faintly marked, and its 

 whole appearance is that of the fifth division. 



To this division might also have been referred the 83d spe- 

 cies ; but its ridge also is indistinct, and its appearance is that 

 of the ninth division. 



20th Species. — Cyprinus dero. Plate XVII. Fig. 78. 

 A Cyprinus of the Bangana kind, with two tendrils ; with 



