6 CYPETNIT)^. 



13. Tharyngeal teeth in a single series. 



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



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



aa. Gill-rakers long, sctiform, closely set. 



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



bb. Gill-rakers short, subcorneal. 



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

 sharp ; a sympbysial tubercle. D. 13-17. 8. Cieriiina, p. 35. 



Snout more or less depressed ; upper lip thin, but fringed ; edge of the man- 

 dible rather sharp ; a symphysial tubercle. D. 26-33. 



9. Dangila, p. 37. 



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

 sharp, transverse prominence; no symphysial tubercle. D. 13-21. 



10. OSTEOCHILUS, p. 40. 



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

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

 and flexible. D. 13-20 11. L.^beo, p. 45. 



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

 horny covering 12. Bartxotus, p. 61 . 



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



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



aa. The greater part of the cheek is tincovered by bone; no adipose 

 eyelid. 



Form of the mouth essentially as in (11.) Labeo ; scales of moderate size. 



13. Ttlognatiius, p. 62. 



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



14. Abrostomus, p. 67. 



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

 gins; pectoral fins horizontal 15. Discogxathus, p. 68. 



Lower jaw transverse, with a narrow lip wliich is not continuous with the upper 

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



16. Crossochilus, p. 71. 

 (16 a. Gymsostojics, p. 75.) 



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

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

 lateral lobe 17. Epalzeorhy.nciius, p. 76. 



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

 anterior mandibular edge being nearly straight, rather sharjj, and covered with 

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



Mouth arched, without inner folds or other peculiarities. Pseudobranchite 

 present 19. Barbus, p. 82. 



Structure of the mouth without peculiarities. Pseudobranchise none. Barbels 

 none 20. Thysnichthys, p. 157. 



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

 adipose eyelid. 



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



cc. Orbit with a broad annular adipose eyelid. 



Caudal fin not scaly 22. AjiBLYRiiYNCiiiciiTnYS, p. 159. 



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



