TILAPIA. 223 



pi'seorbital depth ; mouth f to | width of head, extending to below 

 anterior border of eye ; teeth in 3 to 5 series, outer larger, 40 to 60 in 

 upper jaw ; lateral teeth conical but passing generally into the bicuspid 

 teeth ; 3 or 4 series of scales on the cheek, width of scaly part equal to 

 diameter of eye. Gill-rakers short, 8 to 10 on lower part of anterior 

 arch. Dorsal XIV-XYI 8-10 ; last spine longest, f to ^ length of 

 head, | to f longest soft rays. Anal III 7-8 ; third spine as long as or 

 a little shorter than longest dorsal. Pectoral f to f length of head, 



Ym. 145. 



Tilajiia calliptera. 

 Type, after Giinther (P. Z. «. 1893). 



s 



not extending to vertical of origin of anal. Ventral reaching vent or 

 orio-in of anal. Caudal rounded. Caudal peduncle as long as deep. 



S-4 19- ^2 



Scales finely denticulate, 30-33 y^zn; lateral lines —^ Brown or 

 olive, with more or less distinct dark and light spots on the soft dorsal 

 and caudal fins ; a more or less distinct dark band from below the eye 

 to the angle of the mouth, sometimes extending to the chin ; a dark 

 opercular spot ; anal fin often with a few large round white spots ; 

 ventral s black in males. 

 Total length 140 millim. 

 Lake Xyassa and Zambesi Sj^stem. 

 1. Type. L. Nyassa. Mr. J. A. Williams (C). 



2-4. Types. L. Nyassa and Upper Shire. Sir H. H. Johnston (P.). 



5. Skel. ,) )) '' 



6-14. Types of ., „ ■' 



C. suhocularis. 

 15-16. Yg. » V ^ » 



17 Her. Between Kondowe and Karongi. A. AVhyte, Esq. ((/'.) ; 



Sir H. H.Johnston (P.). 



ly. Type. Zomba. 



