PAEATILAPIA.. 



345 



27. PARATILAPIA CRASSILABRIS. 

 IJaplocliromis crassUahrls, Boulenp;. Ann. & Mag. N. H. (7) xvii. 190G, p. 445. 

 Paratilapia crassilabris, Boulong. Fish. Nile, p. 482, pi. Ixxxvii. fig. 5 (1907), and 

 Ann. Mus. Geneva, (3) v. 1911, p. G8. 



Depth of body equal to length of head, 2| to 3 times hi 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 prajorbital 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 



Pis. 233. 



.-.^"c#: 



* -■_•*'* W| 



Ihlajna enissilabris. 

 Type(r. K). f 



indistinctly bicuspid in the adult, bicuspid in the young, 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 ^ length of 



head ; longest soft rays about J 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 Ij to 1^ times as long as deep. Scales 



feebly denticulate, 31-33 j^; lateral lines \^o,. 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 



