248 Annals of the South African Museum. 



CYBIUM COMMEESONII, Lac6p. 



Teeth, strong triangular teeth on each jaw, the lateral ones 

 longest ; a patch on vomer and a band on palatines. Depth of body 

 a little more than 4f times in total length excluding caudal, length 

 of head 4i times. Snout If times diameter of eye, which is If 

 times in interorbital width and 5 T ' times in length of head ; greatest 

 width of head f-, greatest height f its length. Maxillary reaches to 

 vertical of posterior margin of orbits ; posterior border of preoper- 

 culum slightly emarginate, and the angle rounded and very slightly 

 produced. 



Dorsal xvi, iii 13, 10 (finlets) ; spines of 1st dorsal weak ending in 

 thin filamentous points beyond the membrane, which is notched ; 

 2nd dorsal highest in front with its upper margin concave, com- 

 mencing a little in advance of anal, longest rays -| length of head. 

 Pectorals f length of head. Ventrals small, about % length of head. 

 Anal iii 13, 10 (finlets) ; commences a little behind soft dorsal which 

 it resembles. Caudal longer than head, with pointed lobes, each 

 with a raised oblique ridge across base. Lateral line undulating, 

 situated in upper 4th of body as far as middle of soft dorsal, where 

 it makes a strong curve downwards and continues in a wavy line to 

 caudal, where it ends in a raised keel between the bases of either 

 lobe. 



Colour, dark bluish on back shading off to silver on belly, a series 

 of irregular dark spots of fair size on sides above belly, anal fin dark 

 bluish at base shading off to white at tip, pectorals white with dark 

 lines, spinous dorsal transparent posteriorly, dark anteriorly, soft 

 dorsal dark ; the vertical fins are covered with minute brownish 

 spots in the preserved specimen. 



One specimen, 320 mm. in length, from Mr. Eomer Robinson, 

 Natal, who kindly supplies a note of the colour when alive. Much 

 larger specimens are common at Durban, and this is apparently 

 a comparatively young and immature form. 

 \ 



ECHENEIS BEMORA, L. 



Depth of body 7 times in total length excluding caudal ; length of 

 head including disk 2 T ^ times, without disk a little more than 

 4 times ; breadth of body between pectorals 5f times. Eye 3i times 

 in distance from end of snout and 7|- times in length of head. Eyes 

 transversely oval, situated about the centre of the length of the 

 head, and the same distance apart superiorly and inferiorly. Lower 



