LABEO. 321 



Total length 320 milHm. 



Modjo and Wabbi Rivers (Webi Shebeli), S. Ethiopia. 

 1-2. Types. Modjo R. Prof. 0. Neumann and 



Baron 0. von Erlanger (C). 



15. LABEO GREGORII. 

 Gunth. Proc. Zool. Soc. 1894, p. 90, pi. x. fig. B. 

 Laheo hottegi, Vincig. Ann. Mas. Geneva, (2) xvii. 1897, p. 358. 



Body strongly compressed, its depth 31- to ^ times in total length. 

 Head 4 to 4^ times in total length, IJ times as long as broad; 

 snout obliquely truncate, strongly projecting; eye perfectly lateral, 

 in middle of head, 3 to 3| times in length of head, 1^ to If times 

 in interorbital width ; lips with small papillae forming transverse 

 plicae; lower lip with a fringe of conical papilla;; rostral flap with 

 entire edge; a small barbel, hidden in folds of skin ; small tubercles on 

 snout. Dorsal III 10-11, equally distant from centre or anterior border 

 of eye and from caudal, upper edge concave, longest ray as long as head. 

 Anal III 5, reaching root of caudal. Pectoral as long as head, not 

 reaching ventral, the first ray of which falls below 5th branched ray of 

 dorsal. Caudal deeply notched, crescentio. Caudal peduncle slightly 

 longer than deep. Scales 35-37 ^-^, 4 between lateral line and root 

 of ventral, 16 round caudal peduncle. Silvery, brownish on the back. 



Total length 125 millim. 



Tana and Rovuma Rivers, East Africa. 



1. Type. Tana R. at Merifano. Prof. J. W. Gregory (P.). 



2, 3. Yg. Rovuma R. Sir J. Kirk (P.). 



16. LABEO DARLINGl. 

 Bouleng. Proc. Zool. Soc. 1902, ii. p. 13, pi. ii. fig. 1. 



Body strongly compressed, its depth nearly equal to length of head 

 and contained 4 times in total length. Head 1^ times as long as 

 broad ; snout rounded, strongly projecting beyond mouth, with scars of 

 small tubercles; eye nearly perfectly lateral, in middle of head, its 

 diameter 4^ times in length of head, 2-j times in width of interorbital 

 region, which is flat ; width of mouth, with lips, f that of head ; rostral 

 flap and anterior border of lip not denticulated ; lower lip with a series 

 of papillae forming a denticulation ; inner surface of lip with numerous 

 transverse plicae, formed of closely-set obtuse papillae ; a minute 

 barbel, hidden in folds at side of mouth. Dorsal II 10, with strongly 



VOL. I. y 



