336 Annals of the South African Museum. 



Teeth in 2 series in the upper jaw, both simply compressed, the 

 front side not concave; dorsal fin originating above or 

 behind ventrals 4. Micralestest. 



2. DISTICHODONTIN^;. Teeth small, notched or bicuspid ; upper jaw immovable or 

 but slightly movable ; maxillary well developed ; scales ciliated ; lateral line 

 along the middle of the side. 



Gill-membranes attached to isthmus. No teeth on maxillary ; 

 suborbitals large, protecting the cheek ; dorsal with 16-27 

 rays 5. Distichodus. 



1. SARCODACES. 



Sarcodaccs, Giinth., Cat. Fish., v., p. 352 (1864). 



Snout elongate; mouth very large, with pointed teeth intermingled 

 with large canines ; two series of teeth on the lower jaw, the outer 

 with canines; premaxillaries immovable, with a posterior process 

 bearing small teeth, between the maxillary and the palatines ; 

 maxillary long, toothed, slipping under the pre- and sub-orbitals. 

 Cheek covered by large sub-orbitals ; nostrils near the eye, close 

 together, separated by a valvular flap. A small adipose dorsal fin. 



SARCODACES ODOE, Bl. 



Salmo odoe, Block, Aust. Pische, viii ., p. 122, ccclxxxvi. (1794). 



Sarcodaces odoe, Giinth., I.e. and Ann. and Mag. N.H. (3) xx., 

 1867, p. 114; and Bouleng. Cat. Fresh. Fish. Africa, i., p. 177 

 (1909). 



Teeth generic. Depth of body 4* times in total length excluding 

 caudal, length of head 3 r 3 o times. Head 2f times as long as broad, 

 flat above, with straight upper profile ; bones of head rugose and 

 striated ; premaxillary part of snout narrowed, rounded, projecting 

 beyond jaw ; snout a little more than 2f times in length of head ; 

 eye lateral, sub-inferior, 2| times in length of snout, 6| times in 

 length of head, nearly twice in interorbital width ; maxillary 

 extending to beyond posterior border of eye ; a triangular dermal 

 fold on each side of lower jaw, covering a notch between pre- 

 maxillary and maxillary bones. Gill-rakers long, longest nearly 

 diameter of eye, 12 on lower part of anterior arch. 



Dorsal ii 7, situated above the space between ventrals and anal, 

 2^ times as distant from end of snout as from base of caudal ; longest 

 ray nearly f length of head. Anal ii 9. Pectoral pointed, a little 

 more than ^ length of head and not reaching to ventral. Caudal 

 forked, with pointed lobes ; caudal peduncle 1 T 3 ^ times as long as 



