274 Annals of the South African Museum. 



T % length of bead. No ventral fins. Anal 49 ; similar to soft 

 dorsal but not quite so high. Caudal (damaged in specimen). 

 Body oblong, skin with a fine velvety appearance. 



Colour (of preserved specimen), uniform pale brown, dorsal anal 

 and pectoral fins whitish. 



One specimen, 318 mm. in length, from Natal. 



FAMILY GYMNODONTES. 



TETRODON LUNARIS, Bl. Schn., var. SPADICEUS, Eich. 

 (Channel or Golden Toby.) 



Teeth in jaws about same size. Length of head about equals the 

 distance between it and base of dorsal fin, and is 3 times in total 

 length excluding caudal. Snout nearly twice diameter of eye, which 

 is about 4 times in length of head and situated high up and nearer 

 to gill-opening than to point of snout ; interorbital space flat and 

 If times diameter of eye. 



Dorsal 12 ; situated in last third of distance between point of 

 snout and base of caudal ; anterior rays longest, a little more than 

 f length of head ; length of base of fin slightly more than half its 

 height. Pectorals 18, 2 length of head. Anal 11, situated below 

 dorsal, of similar height and shape but not quite so long. Caudal 

 lunate, the lobes slightly produced, about f length of head. Spines 

 cover top of head and back from between eyes to about midway 

 between posterior margin of orbits and origin of dorsal fin, abdomen 

 similarly covered from throat to in line with extremity of pectorals ; 

 snout, sides, and tail spineless. 



Colour (of preserved specimen), dark brown on back, sides and 

 belly yellowish, tips of caudal dark. 



One specimen, 166 mm. in length, from Mr. Eomer Eobinson, 

 Natal, who states it is common in Durban Bay in deep water. 



TETRODON INERMIS, Temm. and Schleg. 



Teeth about same size on both jaws. Length of head equals its 

 distance from middle of base of dorsal fin, and is 2f times in total 

 length excluding caudal. Eyes large, situated high up and much 

 nearer to gill-opening than to point of snout, longitudinal diameter 

 about ^ the distance from point of snout and % the interorbital width, 

 which is concave. 



