220 SILUE1D.E. 



a. Teeth on the palate. 

 Maxillary barbel terminating in a leaf-like 



expansion 18. Phyllonemus, Blgr., p. 349. 



/3. Palate toothless. 

 Dorsal and pectoral fins with a pungent spine. 19. Leptoglanis, Blgr., p. 350. 

 Dorsal and pectoral fins -without spine ; pos- 

 terior nostril distant from the eye . . . 20. Amphilius, Gthr., p. 353. 

 Dorsal and pectoral fins -without spine ; pos- 

 terior nostril close to the eye . . . .21. ParampluUios, Pellegr., p. 363. 



b. Anterior nostril on upper lip, tubular; palate toothless. 



Dorsal with 7 branched rays ; gill-membranes 



deeply notched ; eye without free border. 22. Paraucltenoglanis, Blgr., p. 364. 



Dorsal with 7-8 branched rays ; gill-mem- 

 branes feebly notched ; eye with free 

 border 23. AuvJienoglaiiii, Gthr., p. 3(56. 



Dorsal with 14-15 branched rays ; gill-mem- 

 branes feebly notched ; eye without free 

 border 24. Notoglanidium, Gthr., p. 377. 



B. Gill-membranes not notched, forming a straight transverse fold or a very 

 open angle ; nasal barbels absent ; dorsal with 6-7 branched rays. 



Palate toothless ; nostrils rather widely sepa- 

 rated from each other 25. Ancharius, Stdr., p. 378. 



Teeth on vomer and pterygoids; nostrils close 



together 26. Galeichthys, (J. & V., p. 381. 



Teeth on pterygoids ; nostrils close together . 27. Arius, C. & V., p. 383. 



V. Dobamn^e. — Dorsal fin short ; a second dorsal fin, adipose or rayed ; anal 

 short ; gill-membranes more or less grown to isthmus. 



A. Second dorsal fin adipose, without rays ; movable, slender, curved teeth in 

 the mandible. 



1. Mandibular barbels branched ; prasmaxillary teeth conical, not 



movable. 



Eye with free border 28. Sgnodontl.% Cuv., p. 391. 



Eye without free border 29. Microti/ nodoidis, Blgr., p. 476. 



2. None of the barbels branched; mouth with a sucker-like papillose 



circular lip. 



Preemaxillary teeth conical, not movable, man- 

 dibular pointed; eye without free border. 30. Cldloglaiiis, Peters, p. 478. 



Praemnxillary teeth pointed, curved, mandi- 

 bular with truncate or bicuspid crowns ; 

 eye with free border 31. Euchilkhthys, Blgr., p. 48' 



Prrcmaxillary and mandibular teeth movable, 



with truncate crowns; eye with free border 32. Atopoclulus, Sauv., p. 490. 



). 



