LAEEO. . 303 



D. Ill 10 ; Sc. 39 ^|, 4, 22 ; caudal peJunelo 



longer than deep 23. L. hrVu, BIgr., p. 328. 



/9. 16-18 scales round caudal peduncle. 



* Caudal peduncle longer than deep. 



D. Ill 9-11 ; diameter of eye 5^-8 times 



in length of head ; Sc. 38-42 ^f=|f, 4-5, 



16-18 • • ' . • 24. Z./o>'5/^-aZ», Riipp., p. 329. 



D. HI 8-10 ; diameter of eye 4-7 times in 



length of head ; Sc. 35-39 Jr|f, 3-4, 



16-18 'I^. L. cr/Undricus, Peters, p. 331. 



** Caudal peduncle as long as deep or little deeper than long ; 

 D. Ill 10 ; Sc. 37-39 ^, 4, 16. 

 Diameter of eye 7 times in length of head in 

 adult; snout pointed, ending in a turned- 



up appendage 2G. L. nasus, Blgr., p. 333. 



Diameter of eye 4-5i times in length of head ; 



snout obtusely pointed 27. Z. p^eeniJ, Blgr., p. 334. 



7. 12 scales round caudal peduncle ; D. Ill 10 (rarely 9 or 11). 

 * Caudal j)eduncle 1^-lf times as long as deep ; Sc. 34-39 gHI. 

 Head 1^ times as long as broad ; 4 series of 



scales between lateral line and ventral. . 28. Z. lukulce, Blgi'-, p. 335. 

 Head 1|-1| times as long as broad ; 3 series of 



scales between lateral line and ventral . . 29. L. annectens, Blgr., p. 336. 



** Caudal peduncle not or but. slightly longer than deep ; Sc. 33- 

 35 A' 2|-3, 12. 



'-'s '-'2 



Longest ray of dorsal If-lf times as long as 

 head ; diameter of eye 2|-3 times in inter- 

 orbital width 30. L. charlemis, Pellegr., p. 337. 



Longest ray of dorsal as long as or a litlle 

 shorter than head ; diameter of eye l|-2 

 times in interorbital width 31. Z. joariw, Blgr., p. 337. 



Longest ray of dorsal as long as or a little 

 longer than head ; diameter of eye 1^-1| 



times in interorbital width 32. Z. ohscurus, Pellegr., p. 338. 



II. Two barbels on each side ; dorsal with concave upper edge. 



A. Eyes perfectly lateral, or nearly perfectly lateral ; barbels not longer 



than eye. 



D. Ill 8-10 ; Sc. 58-65 [gl^g, 9-10, 30-34 . 33. L. vmhratus, A. Smith, p. 339. 

 D. IV 10-11 ; Sc. 44-50 jo|^fj, 6-7, 20-24 . 34. L. capensis, A. Smith, p. 340. 

 D. IV 10 ; Sc. 36 |, 4, 16 35. L. ansorpi, Blgr., p. 341. 



B. Eyes supero-lateral ; barbels longer than eye in the adult. 



D. Ill 10-11 ; Sc. 40-41 ^^f,, (], 20-22 . . 36. L. harhafus, Blgr., p. 342. 



