536 CICHLIDJE. 



measures about half the length of the head ; longest soft rays a little longer than 

 the head. Anal fin with 3 spines and 10 soft rays; third spine shorter than the 

 last dorsal. Pectoral fin falciform, much longer than the head, reaching a little 

 beyond the origin of the anal. Ventral fin reaching the anal. Caudal fin truncate, 

 very slightly emarginate. Caudal peduncle slightly deeper than long. Scales not 

 denticulate, 32 ^ ; lateral lines ^. 



Olive above, the scales darker at the base ; yellowish beneath, mottled with brown 

 and mother-of-pearl ; a black opercular spot ; spinous dorsal and anal with numerous 

 dark horizontal streaks ; soft dorsal and caudal with round light spots on a dark 

 ground ; soft dorsal fin edged with bright yellow. 



Measurements (in millimetres). 



Total length 420 



„ „ (without caudal) 340 



Greatest depth 155 



Length o£ head 113 



Width of head 64 



Length of snout 39 



Diameter of eye 22 



Interorbital width 50 



Length of last dorsal spine 53 



„ longest soft dorsal ray 120 



„ third anal spine 41 



„ longest soft anal ray 110 



„ pectoral 153 



This fine fish, one of the largest of the family Cichlidae, is described from a single 

 specimen obtained in Lake Albert by Mr. J. E. S. Moore in 1900, and named in 

 memory of Dr. John Anderson. It is closely allied to P. tanganicce, Gthr., from which 

 it differs in the last dorsal spine being much longer than the middle one. 



