496 eiCHLiPJS. ; 



II. Teeth in three to five series ; pectoral fin as long as head ; caudal fin truncate or slightly 



emarginate ; caudal peduncle once and one-third to twice as long as deep. 

 D. XIV-XVI 9-10 ; A. Ill 8-9 ; Sq. 30-34 ^ ; gill-rakers 11 



to 13 on lower part of anterior arch 5. II. stanleyi, Blgr. 



D. XV-XVI 9-10 ; A. Ill 8-9 ; Sq. 31-34 j|=i ; gill-rakers 8 to 



9 on lower part of anterior arch 6. H. ishmaeli, Blgr. 



III. Teeth in five to seven series ; pectoral fin as long as head or a little shorter ; caudal fin 

 truncate; caudal peduncle not or but slightly longer than deep. 



D. XY-XYI 9-10 ; A. Ill 8-9 ; Sq. 32-35 ±^ 7. H. nuchisquamulatus, Hilg. 



1. HAPLOCHROMIS PERCOIDES. 



(Plate XC. fig. 1.) 



Boulenger, Ann. & Mag. N. H. (7) xvii. 1906, p. 443. 



Depth of body three and one-fourth to three and a half times in the total length, 

 length of head twice and three-fourths to three times ; body deepest at the nape. 

 Snout with convex upper profile, a little longer than the eye, which is four times 

 in the length of the head, once to once and one-fourth in the interorbital width, and 

 exceeds a little the least depth of the praeorbital; lower jaw projecting ; maxillary 

 extending to below the anterior border of the eye ; outer teeth rather large, unicuspid 

 or some with a faint trace of a lateral cusp, 44 to 50 in the upper jaw, followed by two 

 series of minute tricuspid teeth ; four series of scales on the cheek, the depth of the scaly 

 part below the eye equal to the diameter of the eye. Gill-rakers moderate and stout, 

 8 or 9 on lower part of anterior arch. Dorsal fin with 14 or 15 spines and 10 soft 

 rays ; spines increasing in length to the last, which measures nearly one-third the 

 length of the head; longest soft rays nearly half the length of the head. Anal fin 

 with 3 spines and 9 soft rays; third spine longest, as long as and stronger than the 

 last dorsal. Pectoral fin pointed, two-thirds the length of the head, not reaching the 

 origin of the anal. Ventral fin reaching the vent. Caudal fin truncate. Caudal 

 peduncle once and a half as long as deep. Scales strongly denticulate, 32^; lateral 



,-. , 20-21 



jmes 1x1x5. 



Dark olive above (when fresh), ochre-yellow below ; four dark brown transverse 

 bands on the body and a dark brown blotch at the base of the caudal fin; a dark 

 brown bar across the forehead, and another, vertical, below the eye; dorsal fin light 

 olive-brown with a darker longitudinal streak on its posterior portion; pectoral, 



