446 



Annals of the South African Museum. 



If- times as distant from caudal as from end of snout. Caudal 

 length of head. 



Colour (of preserved specimen), uniform reddish brown. 



FIG. 99. Clarhis theodora. 



One specimen, 127 mm. in length, from N.W. Ehodesia (Rev. 

 F. A. Rogers and E. C. Chubb. Buluwayo Museum). 



This fish is also reported from the Lake Ngami Basin, Natal and 

 Zululand. 



2. HETEROBEANCHUS. 



Geoff., Descr. Egypte, Poiss. (1809), part. ; Giinth., Cat. Pish., v., 



p. 21 (1864) ; Bouleng., Poiss. Bass. Congo, p. 265 (1901), 



Fish. Nile, p. 300 (1907), Proc. Zool. Soc., 1907, p. 1094, and 



Cat. Fresh. Fish. Afr., ii., p. 272 (1911). 



Distinguished from Clarias by the division of the dorsal fin 



into two parts, the posterior adipose and supported by the 



prolongations of the neural spines. 



* HETEROBEANCHUS LONGIFILIS, C. and V. 



Heterobranchus longifilis, Cuv. and Val., Hist. Poiss., xv., p. 394, 

 pi. ccccxlvii. (1840); Giinth., Cat. Fish., v., p. 22 (1864), and 

 Petherick's Travels, ii., p. 221 (1869) ; Bouleng., Fish. Nile, p. 303, 

 pi. liv., fig. 2 (1907), Proc. Zool. Soc., 1907, p. 1095, and Cat. Fresh. 

 Fish. Aft-., ii., p. 274, fig. 227 (1911). 



