1 1 1 



without scaly sheath. Anal short, with 8 branched rays and 

 weak spines. Scales of moderate size, their uncovered part 

 transversely rugose between the radiating lines. Lateral line 

 complete, running nearly in the middle of the tail. Mouth 

 anterior, its gape rather wide, not reaching frontborder of eye. 

 Upper jaw somewhat prominent. Lips moderately developed, 

 a horizontal rostral fold, containing at its base the maxillaries, 

 covering the base of the upper lip. Postlabial groove only 

 near corner of mouth and continued round it. No barbels. 



Fig. 51. Ctenopharyngodon idellus (C.V.). X Vv 



Praeorbital rounded-triangular, its breadth nearly equal to eye 

 and more than the hindmost suborbital. Operculum thick, 

 strongly vaulted, with numerous irregular grooves for blood 

 vessels. Gillrakers lanceolate, short, rather widely set. Pseudo- 

 branchiae present. Gillopenings wide, gillmembranes attached 

 to isthmus somewhat behind vertical through hindborder of 

 eye. Pharyngeal teeth 5.2 2.4; those of the outer series very 

 strong, strongly compressed, laterally folded, their narrow 

 masticatory surface denticulated. Distribution as that of the 

 single species known. 



i. Ctenopharyngodon idellus (C.V.). 



Leuciscus idella Cuvier & Valenciennes, Hist. nat. Poissons XVII. 1844, p. 362. 

 Leuciscus idella Richardson, Report Ichth. China & Japan in Report British 



Assoc. London 1846, p. 297. 

 Leuciscus tschiliensis Basilewsky, Nouv. Mem. Soc. Nat. Moscou X. 1855, 



P- 233. 

 Ctenopharyngodon laticeps Steindachner, Ichth. Mitth. IX. in Verhandl. zool. 



hot. Ges. Wien XVI. 1866, p. 782. 



Ctenopharyngodon idellus Giinther, Cat. Brit. Mus. VII. 1868, p. 261. 

 Leuciscus idellus Bleeker, Verh. Akad. Amsterdam XII. 1871, Memoire Cyprin. 



de Chine p. 47. 



