SICYDIUM. 



43 



Synopsis of the Species. 



I. Movable teeth in upper jaw unicuspid ; [p. 43. 



conical teeth in lower jaw subequal . . 1. S. brevijilis, Ogilvie-Grant, 



II. Movable teeth in upper jaw tricuspid. 



A. Conical teeth in lower jaw subequal. 



Head as broad as deep ; nape naked . . . . 2. S. acutipinnis, Guich., p. 44. 



B. Anterior conical teeth in lower jaw much larger than the others. 

 Head broader than deep ; nape and belly 



scaly 3. S. laticeps, C. & V., p. 44. 



Head as broad as deep; nape and belly scaly . 4. S. lagocephalum, Pall., p. 45. 

 Belly naked 5. S. parvipinnis, Guich., p. 45. 



Fig. 25. 



Sicydium brevifilis. 

 Type, after Ogilvie-Grant (1. c). 



1. SICYDIUM BREV T IFILIS. 



Ogilvie-Grant, Proc. Zool. Soc. 1884, p. 158, pi. xii. fig. 1 ; Pietschmann, .Tahrb. 

 Nass. Ver. Naturk. lxvi. 1913, p. 183. 



Depth of body 5^ to 6 times in total length, length of head 3| to 

 4J times. Head as deep as broad ; eye 4 (young) to 7 times in length 

 of head, 1 to 1§ times in interorbital width ; mouth extending to below 

 centre or posterior border of eye ; movable labial teeth unicuspid ; 

 mandibular teeth subequal. Dorsals VI, I 10, narrowly separated, 

 second to fifth simple rays produced into short filaments. Anal I 10. 

 Pectoral a little shorter than head. Caudal rounded. Body entirely 

 scaly ; 70-75 scales in longitudinal series. Yellowish brown or pale 

 olive, uniform or with ill-defined dark spots on the sides ; anal fin with 

 a brown and white margin. 



Total length 105 millim. 



Cameroon. 



1. Type. 

 2-3. Yg. 



Cameroon. 



Kribi P. at Kribi. 



Sir A. Smith (P.). 



G. L. Bates, Esq, (C.), 



