FRESH-WATER FISHES OF SlAM, OR THAILAND 119 



17c. Pharyngeal teeth triserial ; last simple dorsal ray 

 osseous or nonosseous and denticulated or non- 

 denticulated. 

 ISo. Lower lip closely adnate to lower jaw or separated 

 by a superficial sulcus ; barbels 4, 2, or none. 

 19«. Body deep, strongly compressed ; scales in lateral 

 line 44 to 80 (45 in Siamese species) ; origin 

 of dorsal fin behind origin of ventrals; 

 branched dorsal rays 8 ; last simple dorsal ray 

 osseous and denticulated ; branched anal rays 

 11 to 33 (about 30 in Siamese species) ; 

 barbels rudimentary or absent in local species. 



Rohtee 

 196. Body mostly moderately elongate and moder- 

 ately compressed. 

 20a. Lower jaw with a postsymphyseal knob more 

 or less developed; last simple dorsal ray 

 nonosseous and nondenticulated. 

 21a. Mouth large, maxillary reaching to or 

 beyond vertical from eye; lower lip well 

 developed; barbels 4 or none (excep- 

 tionally 2) ; scales in lateral line 31 to 50 ; 

 origin of dorsal fin posterior to origin of 

 ventrals; branched dorsal rays 7 or 8; 



branched anal rays 9 to 13 Barilius 



21 ft. Mouth small, maxillary not reaching ver- 

 tical from anterior border of eye; lower 

 lip very thin or deficient ; barbels 4, 2, or 

 none; scales in lateral line 32 to 60; 

 origin of dorsal fin in advance of ven- 

 trals; branched dorsal rays 7 to 12; 



branched anal rays 5 Cirrhinus 



20&. Lower jaw with no postsymphyseal knob. 



22ff. Snout entire; snout and cheeks without 



horny tubercles; gill rakers numerous, 



usually lanceolate ; branched dorsal rays 



7 to 9 ; branched anal rays not elongated 



in male. 



23a. Last simple anal ray weak or strong, 



nondenticulated ; barbels 4, 2, or none. 



Puntius 

 23b. Last simple anal ray stout, osseous, 

 strongly denticulated; barbels absent. 

 Puntioplites 

 22b. Snout with a median and lateral lobes; 

 snout and cheeks beset with horny tuber- 

 cles ; gill rakers few, triangular ; branched 

 dorsal rays 8 ; last anal rays elongated in 

 male, normal in female; barbels rostral 



and maxillary Chagunius 



18b. Lower lip conspicuously separated from lower jaw, 

 which has a horny sheath; snout and cheeks 

 beset with horny tubercles; barbels rostral and 

 maxillary Acrossocheilus 



