PAEATILAPIA. 309 



Synopsis of the Species. 

 I. 7 to 14 gill-rakers on lower part of anterior arch ; less than 50 scales in 

 longitudinal series on the body. 

 A. Prsemaxillary processes very long, extending to between the orbits ; caudal 

 rounded or truncate. 

 1. Width of head not more than 2£ times in its length. 



a. Pectoral shorter than head. 



D. X-XIII 10-12 ; A. Ill 8-11 ; Sc. 28- 



30 \x_ i3 ; 4 to 6 series of scales on tho 



cheek I. P. polleni, Blkr., p. 315. 



D. XIV-XV 10-11 ; A. Ill 7 ; Sc. 27- 



Q 



28 y2 5 3 or 4 series of scales on the cheek. 2. P. cerasogaster, Blgr., p. 316. 

 D. XIV-XV 13-15 ; A. Ill 8-10 ; Sc. 34- 

 36 1214 ; 5 or 6 series of scales on the 

 cheek 3. P. macrocephala, Blgr., p. 317. 



b. Pectoral at least nearly as long as head. 

 D. XV-XVI 9-10 ; A. Ill 8-9 ; Sc. 32 ^ ; 



3 or 4 series of scales on the cheek . . . 4. P. gestri, Blgr., p. 318. 

 D. XV 13 ; A. Ill 9-10 ; Sc. 34-37 *=** ; 



5 or 6 series of scales on the cheek . . . 5. P. longimanus, Blgr., p. 319. 



2. Width of head 2^ to 3 times in its length ; pectoral shorter than head. 

 D. XIV-XVI 14-16 ; A. Ill 11-13 ; Sc. 36- 



5-7 

 39 12 _i8 > lovver jaw projecting ; 7 to 10 



series of scales on the cheek ; caudal 

 peduncle as long as deep or a little longer 

 than deep 6. P. angusticeps, Blgr., p. 320. 



D. XVI 9 ; A. Ill 8 ; Sc. 33 ^ ; jaws e^ual 

 in front ; 4 series of scales on the cheek ; 

 caudal peduncle slightly longer than deep. 7. parvidens, Blgr., p. 322. 



D. XVI 8-10 ; A. Ill 7-8 ; Sc. 32-33 |jj ; 

 jaws equal in front ; 3 or 4 series of scales 

 on the cheek ; caudal peduncle 1\ to 1£ 

 times as long as deep 8. P. pfefferi, Blgr., p. 323. 



B. Prsemaxillary processes not extending to between the orbits; caudal 

 rounded, truncate, or slightly emarginate, not scaly. 

 1. Pharyngeal teeth all slender. 



a. Snout considerably longer than the eye in the adult ; depth of body 

 2| to 4J times in total length. 

 a. Caudal peduncle as long as deep or slightly longer than deep ; head 

 2 to 1\ times as long as broad. 



