6 CtPRINIDiE. 



/3. Pharyngeal teeth in a single series. 



An osseous dorsal ray 6. Carassius, p. 29. 



y. Pharyngeal teeth in three series, none molar-like. 



aa. Gill-rakcrs long, setifvrm, closely set. 



Mandibulary symphysis -loose 7. Catla, p. 34. 



bb. Gill-rakers short, siihconical. 



Snout depressed ; lips tliin, the upper not fringed ; edge of the mandible rather 

 sharjj; a symphysial tubercle. JJ. 13-17. 8. Cirrhixa, jd. 35. 



Snout moj-e or less depressed ; npjier lip thin, but fringed ; edge of the man- 

 dible rather sharp ; a symphysial tubercle. D. 2G--33. 



9. Dangila, p. 37. 



Lips more or less thickened ; the osseous part of the mandible forms a hard, 

 sharp, transvei'se prominence; no symphysial tubercle. D. 13-21. 



10. OSTEOCIIILUS, p. 40. 



Snout more or less swollen ; each lip with an inner transverse fold, which is 

 coTcred with a deciduous horny substance forming a sharp edge which is soft 

 and flexible. D. 13-20 11. Labeo, p. 45. 



Form of the mouth without peculiarity; it is arched, without inner folds or 

 horny covei-ing 12. Baryxotus, p. CI. 



b. Dorsal fin with not onore than nine branched rays. 



a. Pharyngeal teeth in three series; anal scales not enlarged. 



aa. The greater part of the check is uncovered by hone ; no adipose 

 eyelid. 



Form of the mouth essentially as in (11.) Laheo ; set les of moderate size. 



13. Tylooxatiius, p. G2. 



Form of the mouth essentially as in (11.) Laheo ; scales small. 



14. Abkostomus, p. 07. 



Lower lip modified into a suctorial disk, with free anterior and posterior mar- 

 gins; pectoral fins horizontal 15. Discogxatuus, p. G8. 



Lower jaw transTerso, with a narrow lip which is not continuous with the upper 

 lip, and with a sharp inner transverse edge. Snout without lateral lobe. 



16. Crossociiili's, p. 71. 

 (16 rt. Gymnostcmus, p. 75.) 



Lower jaw transverse, with a broad double lip continuous with the upper lip, 

 and with a sharp bony inner transverse edge. Snout with a free moveable 

 lateral lobe , 17. Epalzeorhynciius, p. 76. 



Mouth transverse, inferior, each mandible angularly bent inwards in front, tiie 

 antnrior mandibular edge being nearly straight, rather sharp, and covered with 

 a horny layer. No lower labial fold 18. Capoeta, p. 77. 



Mouth arched, without inner folds or other peculiarities. Pseudobranchiae 

 present 19. Barbus, p. 82. 



Strticture of the mouth without peculiarities. Pseudobi-anchia; none. Barbels 

 none 20. Tiiynnicutiiys, p. 157. 



bb. Cheek entirely covered by the dilated suborbital bones. No 

 adipose eyelid. 



Dorsal fin without osseous ray 21. Barbiciitiiys, p. 158. 



cc. Orbit with a broad annular adipose eyelid. 



Caudal fin not scaly , 22. A.mblyruvxciuciithys, p. 159. 



Basal half of the caudal fin scaly 23. Albuliciitiiy.s, p. 159. 



