SYNODONTIS. 395 



Jt Movable mandibular teeth 30-35 ; maxillary barbel longer 

 than head. 

 Humeral process keeled, sharply pointed ; skin 



villose on sides 30. S. depauwi, Blgr., p. 438. 



Humeral process feebly keeled, obtusely pointed; 



skin smooth 31. S. tholloni, Blgr., p. 439. 



Humeral process not keeled, sharply pointed ; 



skin smooth . . « 32. S. angelieus, Schilth., p. 440. 



J! J Movable mandibular teeth 15-20 ; maxillary barbel not or 

 but slightly longer than head. 

 Humeral process much longer than broad; 

 snout twice as long as postocular part of 



head 33. S. courted, Pellegr., p. 441. 



Humeral process little longer than broad ; 

 snout not twice as long as postocular part 

 of head 34. S.tvarclaUs, Blgr., p. 442. 



ft Maxillary barbel very distinctly margined at base. 

 Movable mandibular teeth 20-26 ; adipose 



dorsal shorter than head 35. S. ornatipinnis, Blgr., p. 444. 



Movable mandibular teeth 18-20 ; adipose 



dorsal longer than head 36. S. solcni, Blgr., p. 445. 



/3. Maxillary barbel £ to f length of head ; snout much longer than 

 postocular part of head. 

 * Movable mandibular teeth 24-30. 

 Snout 2i times postocular part of head, acutely 

 pointed ; adipose dorsal a little shorter 

 than its distance from rayed dorsal : 



maxillary barbel f length of head s . . . 37. S. guttatus, Gthr., p. 447. 

 Snout 2 times postocular part of head, obtusely 

 pointed ; adipose dorsal as long as its 

 distance from rayed dorsal ; maxillary 

 barbel ^ length of head 38. S. Longirostris, Blgr., p. 448. 



** Movable mandibular teeth less than 10. 



Snout 2 times postocular part of head, termi- 

 nating in a globular swelling ; adipose 

 dorsal nearly twice as long as its distance 

 from rayed dorsal ; maxillary barbel f 

 length of head 39. S. labeo, Gthr., p. 449. 



Snout li times postocular part of head, termi- 

 nating in a spatulate expansion ; adipose 

 dorsal much shorter than its distance 

 f'-om rayed dorsal ; maxillary barbel \ 

 length of head 40. S. voMlanti, Blgr., p. 450. 



