334 Annals of the South African Museum. 



Total length 95 mm. 



Niger, Old Calabar, Cameroon, Congo." 



This fish is also reported from Chirundu, Upper Zambezi. It is 

 said that in order to escape from the Tiger-fish (Hydrocyon] it skips 

 across the surface of the water, touching it at intervals ; the longest 

 flight or run being about 30 feet. 



FAMILY KNEEIID^. 



" Margin of the upper jaw formed by praemaxillaries ; mouth not 

 protractile, inferior, toothless ; supraoccipital widely separating the 

 very small parietals ; opercular bones well developed ; symplectic 

 present. Gill-opening very narrow. Body scaly. Eibs sessile. 

 Pectoral fin inserted low down, folding like the ventrals." 



KNERIA. 



Steind., Verh. zool.-bot. Ges. Wien, xvi., 1866, p. 769; Giinth., Cat. 

 Pish., vii., p. 372 (1868) ; Bouleng., Cat. Fresh. Fish. Air., i., 

 p. 169 (1909). 



" Mouth rather small and toothless, inferior, transverse, sharp- 

 edged. Gill-opening very narrow, lateral ; 3 branchiostegal rays. 

 Body elongate, cylindrical or slightly depressed, covered with very 

 small, finely striated scales. Dorsal and anal fins short, the former 

 above or behind vertical of ventrals, which have 9 rays. Vertebrae 40 

 (26 + 14) . Air-bladder long and slender, extending along the whole 

 praecaudal part of the body. Intestinal tract very long, with several 

 convolutions. 



Tropical Africa." 



KNEKIA ANGOLENSIS, Steind. 



Steind., Verh. zool.-bot. Ges. Wien, xvi., 1866, p. 770, pi. xvii., 

 fig. 1; Giinth., Cat. Fish., vii., p. 372 (1868); Bouleng., Cat. 

 Fresh. Fish. Afr.,i., p. 170, fig. 134 (1909). 



" Body cylindrical in front, its depth 6^ to 7 times in total length. 

 Head deeper than broad, 1^ times as long as broad, its length 5i to 

 6 times in total length ; snout half as long as postorbital part of 

 head, with spine-like tubercles in the male ; eye lateral, well visible 

 from below, 3 to 3-| times in length of head ; interorbital width 

 f length of head. 



Dorsal ii 8, originating behind vertical of base of ventrals and at 



