260 



CICHLIDiE. 



shorter than postocular part cf head ; eye shorter than snout, 3| to 4-f 

 times in length of head, 1^ to 2 times in interorbital width, exceeding 

 least depth of praeorbital ; mouth moderate, about | width of head, 

 extending to below anterior border of eye, or nearly as far; end of 

 maxillary exposed ; teeth in 3 to 5 series, outer moderately large, 36 to 

 40 in upper jaw ; 4 or 5 series of scales on the cheek, width of scaly 

 part equal to diameter of eye. Gill-rakers short, 10 or 11 on lower part 

 of anterior arch. Dorsal XIII-XV 12-14 ; spines subequal, or last 



Tilapia betnleana. 

 Madagascar. I. 



longest, 2^ to 3 times in length of head ; some of the soft rays 

 produced, as long as or longer than head. Anal III 10-12 ; third spine 

 longer than last dorsal. Pectoral |- to once length of head, not 

 extending to vertical of origin of anal. Ventral reaching vent. Caudal 

 emarginate. Caudal peduncle slightly deeper than long. Scales finely 



4-4 i 

 14-1(5 ' 



denticulate, 33-36 

 pectoral fins yellowish. 



Total length 200 millim. 



Madagascar. 



Betsileo. 



lateral lines j±, 



Uniform dark brown ; 



1-2. Types. 

 3. Ad. 



Madagascar. 



Rev. W. D. Cowan (C). 

 Paris Museum (E.). 



