1898.] SYRIAN FISHES OF THE FAMILY CICHLIUJE. 151 



ocellus on the soft dorsal ; a black, white-edged ocellus sometimes 

 present in the upper part of the caudal. 



Total length 75 millim. 



Graboon. 



5. Chromidotilapia, g. n. 



Body moderately elongate ; scales cycloid. Teeth in a single or 

 double series, the inner, if present, shoi't or irregular ; some of the 

 larger ones with the crown bent at an angle to the shaft and 

 directed backwards. Maxillary exposed. A cushion-like papillose 

 pad on each side of the palate, close to the upper part of the 

 branchial arches. Dorsal with 14 to 16 spines, anal with 3. 

 Vertebra 27 (14 + 13). 



West Africa. 



1. Chbomidotilapia K.INGSLEY.E, sp. n. (Plate XIX. fig. 2.) 



Hemichromis sclmebiscM (non Sauvage), Giinth. Ann. & Mag. 

 N. H. (6) xvii. 1896, p. 273. 



Teeth in a single or double series, the inner, if present, short 

 and irregular. Depth of body 2| to 2i times in total length, 

 length ot head 2| to 3 times. Wnout with straight upper protile, 

 1| to 2 times as long as the diameter of the eye (in the adult), 

 which is 4 to 4^ times in length of head and equal to or a little 

 less than interorbital width ; maxillary not reaching to below 

 anterior border of eye ; four series of scales on the cheek ; large 

 scales on the opercle. Grill -rakers on lower part of anterior 

 arch short and broad, crenulated, 10 to 12. Dorsal XIV-XVI 

 10-12 ; spines increasing in length to the last, which is about 

 f length of head and hardly g longest soft rays. Pectoral | to | 

 length of head. Venti-als reaching vent or anal. Anal III 8-9 ; 

 third spine as long as or a little shorter than longest dorsal spine. 

 Caudal rounded. Caudal peduncle a little deeper than long. 

 Scales with smooth border, 29-32 ^ ; lat. 1. ^^. Brownish, 

 uniform or with rather indistinct traces of six darker cross-bars ; 

 a more or less distinct dark opercular spot ; fins greyish, blackish 

 towards the border ; soft dorsal and caudal, in some specimens, 

 with regular squarish dark spots forming bars between the rays. 



Total length 150 millim. 



Graboon, Ogowe. 



2, Chromidotilapia (?) frederici. 



Chromys frederici, Castelnau, Poiss. Afr. Austr. p. 15 (1861). 



Teeth few, wide apart, in a single series except in front of the 

 lower jaw. Body rather elevated. Dorsal XV 14. Anal III 8. 

 Pectoral moderate. Scales finely granulate, with smooth edge. 

 Lat. 1. f f . Greyish white ; dorsal tipped with reddish ; anal red ; 

 ventrals greenish ; caudal reddish. 



Total length 230 millim. 



Lake Ngami. — Known only from Castelnau's very imperfect 

 definition. 



