PARATILAPIA. 



345 



27. PARATILAPIA CRASSILABRIS. 



IJaplochromis crassilabris, Bouleng. Ann. & Mag. N. H. (7) xvii. 190G, p. 445. 

 Paratilapia crassilabris, Bouleng. Fish. Nile, p. 482, pi. lxxxvii. fig. 5 (1907), and 

 Ann. Mus. Genova, (3) v. 1911, p. 68. 



Depth of body equal to length of head, 2f to 3 times in total length. 

 Head about twice as long as broad ; snout with convex upper profile, 

 broader than long, as long as (young) or a little longer than diameter of 

 eye, which is 3| to 4 times in length of head, equals interorbital width, 

 and exceeds prseorbital depth ; mouth not very oblique, with very thick 

 lips, not extending to below anterior border of eye ; teeth in 3 or 4 

 series, 20 to 34 in outer series of upper jaw. outer large and conical or 



Fig. 233. 



Jv rj::v\ 



THapia crassilabris. 

 Type(F.K). I. 



indistinctly bicuspid in the adult, bicuspid in the yotmg, the others 

 minute and conical or tricuspid ; 3 series of scales on the cheek, width 

 of scaly part equal to or a little less than diameter of eye. Gill-rakers 

 short, 7 or 8 on lower part of anterior arch. Dorsal XV-XVI 8-9 ; 

 spines increasing in length to the last, which measures f to J length of 

 head ; longest soft rays about ^ length of head. Anal III 8-9 ; third 

 spine stronger and usually a little shorter than last dorsal. Pectoral 

 f to f length of head, extending to vertical of origin of anal. Ventral 

 extending a little beyond origin of anal. Caudal truncate or rounded- 

 subtruncate. Caudal peduncle 1^ to 1^ times as long as deep. Scales 

 feebly denticulate, 31-33 ^; lateral lines y^. Brownish above, silvery 

 white beneath ; a rather indistinct dark bar across the nape, in front of 

 the dorsal fin, and more or less distinct traces of two dark longitudinal 



