2,52 TELEOSTEI. MIY8OSTOMI. 



6. Genus SCHIZOTHORAX, Heckel*. 



Syn. Schizopyge, sp., Heckel ; Racoma, sp., McClell. ; Opistocheilus, pt., 

 Bleeker. 



Abdomen rounded. Snout conically rounded, and laterally 

 somewhat compressed, with the mouth arched and antero-inferior ; 

 mandible neither broad, flattened, nor with a sharp margin, its 

 edge sometimes having a thin, deciduous horny covering. Barbels 

 four. Pharyngeal teeth pointed, hooked, 5, 3, 2/2, 3, 5. Dorsal 

 h'n rather short, with a strong, osseous, serrated ray, and arising 

 opposite the ventrals ; anal short. Scales very small, the vent and 

 base of the anal fin in a sheath, covered by an enlarged row ar- 

 ranged like tiles. Lateral line passing to the centre of the base of 

 the caudal fin. 



Geographical Distribution. Mountain-streams and rivers of the 

 Himalayan region, also Afghanistan and Turkestan. 



* The following species of this genus hare also been recorded : 

 A. Lower labial fold uninterrupted. 



a. Dorsal spine strong, serrated. 



1. SchizotJiorax larbatus, McClelland, Calc. Jour. N. H. ii, p. 580. Afghan- 

 istan. 



b. Dorsal spine feeble, serrated. 



2. 8. ritckcana, McClelland, 1. c. p. 580. Afghanistan. 



3. 8. cdeniana, McClelland, 1. c. p. 579. Cabul river. 



33. Lower labial fold interrupted. Dorsal spine strong, serrated. 



4. & niger, Heckel, Fische aus Caschmir, p. 29, pi. v. Kashmir. 



5. 8. punctatus, Day, P. Z. S. 1876, p. 785. Kashmir. 



0. 8. micropogon, Heckel, 1. c. p. 41, t. viii, fig. 1. Kashmir. 



7. 8. planifrons, Heckel, I. c. p. 44, t. viii, fig. 2. Kashmir. 



8. S. huegclii, Heckel, I. c. p. 36, pi. vii. Kashmir. 



9. 8. curvifrons, Heckel, 1. c. p. 25, pi. iii. Kashmir. 



10. 8. intermedia, McClelland, I. c. p. 579 ; Day, I. c. p. 786, pi. cxxiv, fig. 1. 

 Afghanistan and Turkestan. 



11. S. nasus, Heckel, I. c. p. 32, pi. vi. Tvashmir. 



12. 8. microcephalus, Day, 1. c. p. 787, pi. cxxv, fig. 2. From a tributary of 

 the Oxus Panja. 



13. S. longipinnis, Heckel, I. c. p. 27, t. iv. Kashmir. 



14. S. chrysochlorus, Day, I. c. p. 784 ; Racoma chrysochlora, McClelland, 

 1. c. p. 577, t. xv, fig. 3 ; -S. biddulphi, Giinther, A. M. N. H. ser. 4, xvii, 1876, 

 p. 400. Afghanistan and Turkestan. 



15. S. nobilis; Racoma nobilis, McClelland, I. c. p. 577, t. xv, fig. 4. Afghan- 

 istan. 



16. 8. labiatus, McClelland, 1. c. p. 578, t. xv, fig. 1. Afghanistan. 



17. S. gobioides ; Racoma gobioides, McClelland, I. c. p. 576, t. xv, fig. 3. Af- 

 ghanistan. 



18. 8. brcvis ; Racoma brevis, McClelland, 1. c. p. 578. Afghanistan. 

 Amongst the foregoing 18 species it is most probable that several will turn 



out to be synonyms ; some of those described by McClelland may belong to the 

 genus Oreinus. 



