CLARIAS. 235 



interorbital width ; width of mouth a little less than interorbital width, 

 |- length of head. Band of prae maxillary teeth 5J times as long as 

 broad ; vomerine teeth granular, forming a crescentic band which is as 

 broad as the prgemaxillary band. Nasal barbel nearly •§- length of head ; 

 maxillary barbel slightly shorter than head, reaching base of pectoral 

 fin ; outer mandibular barbel § length of head, inner f. Gill-rakers 

 fine and closely set, about 90 on first arch. Dorsal 67, its distance from 

 the occipital process ^ length of head, its distance from the caudal 

 2 diameters of eye. Anal 53, narrowly separated from caudal. Pectoral 

 not quite J length of head, the spine finely serrated on the outer 

 border, ■§• the length of the fin. Ventrals a little nearer end of snout 

 than caudal. Latter nearly J length of head. Dark brown above, 

 whitish beneath ; anal and caudal with a fine light edge. 



Total length 410 millim. 



Kassam River (Havvash System), Southern Ethiopia. 

 1. Type. Kassam R. at Awhorra Mullka, Skoa, 4000 ft. Mr. E. Degen (C). 



7. CLARIAS LAZERA. 



Silurus anguillaris (non Linn.), A. Russell, Nat. Hist. Aleppo, 2nd ed. ii. p. 217, 



pi. viii. (1794). 

 Maeropteronotus charmuih, part., Lacep. Hist. Poiss. v. p. 85 (1803). 

 Heterobranclius anguillaris (non Linn.), I. Geoffr. Descr. Egypte, Poiss. p. 305, 



pi. xvi. fig. 1 (1827) ; Joannis, Mag. Zool. 1835, pi. xiv. 

 Garmout Lasera, Rifaud, Voy. Egypte, pi. cxcv. (1830). 

 Clarias lazera, Cuv. & Val. Hist. Poiss. xv. p. 372 (1840) ; Giinth. Cat. Fish. v. 



p. 16 (1864) ; Peters, Reise Mossamb. iv. p. 36 (1868) ; Giinth. Petherick's 



Trav. ii. p. 218 (1869) ; Bouleng. Poiss. Bass. Congo, p. 252 (1901) ; 



Hilgend. Zool. Jahrb., Syst. xxii. 1905, p. 409 ; Bouleng. Fish. Nile, p. 288, 



pi. Hi. (1907), and Proc. Zool. Soc. 1907, p. 1073. 

 Clarias syriacus, Cuv. & Val. t. c. p. 375. 

 Clarias capensis (non Cuv. & Val.), Huxley, Mem. Geol. Surv. x. pp. 30 & 32, fig. 



(1861). 

 ? Clarias ngamensis, Casteln. Poiss. At'r. Austr. p. 63 (1861). 

 Clarias orontis, Giinth. Cat. Fish. v. p. 15 ; Sauv. N. Arch. Mus. (2) vii. 1884, 



p. 18, pi. 1. fig. 2. 

 Clarias macracanthus, Giinth. t. c. pp. 16 & 429, and Petherick's Trav. ii. 



p. 219; Lortet, Arch. Mus. Lyon, iii. 1883, p. 151, pi. xvii. ; Tristram, 



Faun. Palest, p. 169, pi. xix. fig. 1 (1884). 

 Clarias xenodon, Giinth. Cat. Fish. v. p. 16. 

 Clarias longiceps, Bouleng. Ann. Mus. Congo, Zool. i. 1899, p. 103, pi. xli. fig. 1, 



and Poiss. Bass. Congo, p. 256 (1901). 



