378 CICHLID^. 



part of tlie branchial arches, and appearing as a strong prominence 

 in front of the latter when the gill-cover is lifted up *. 

 Africa. 



Synopsis of the Species, 



I. Lower hiteral line at least nearly as long as upper ; caudal scaly, truncate 

 or more or less distinctly emarginate ; pectoral usually at least as long as 



bead ; scales cycloid or feebly denticulate. 



6-8 

 D. XV-XVI 13-15 ; A. Ill 8 ; So. 55-G7 __!_ • 1. P- polylepis, Blgr., p. 382. 



D. XIII-XV lG-17; A. ITI 8-9; Sc. 40- 

 5-6 



45 _a_ 2. P. 7V/;^;///;, Stdr., p. 383. 



12-15 



D. XIV-XVI 12-14; A. III. 7-8; Sc. 31- 



4-6 



3G J3 3. P. lateralis, Blgr., p. 385. 



8-14 



II. Lower lateral line much shorter than upper, confined to caudal region oi 

 body. 

 A. Scales cycloid ; caudal rounded, truncate, or slightly emarginate. 



1. 12 to 20 gill-rakers on lower part of anterior arch ; depth of body 2 to 

 2§ times in total length. 



D. XIII 11 ; A. Ill 8-9 ; Sc. 28-30 ^; gill- 

 rakers 18-20 ; teeth in 3 series ; pectoral as 

 long as head 4. P. congicus, Blgr., p. 38G. 



D. XV-XVII 9-12 ; A. Ill 7-8 ; Sc. 28- 



OJ. 



30 q^Iq ; gill-rakers 12-15; teeth in 2 to 4 



series ; pectoral much shorter than head . . 5. P. gitentheri, Sauv., p. 388. 

 D. XIV 11 ; A. Ill 7 ; Sc. 28 f| ; gill-rakers 

 14 ; teeth in 6 or 7 series; pectoral much 

 shorter than head i't. P. regani, Pellegr., p. 390. 



* Number of vertebrae in skeletons examined : — 



13 + 12 = 25. P. subocellutus. 



13 + 13:=26. P. nif/rofasciatus, kiuf/slei/cr. 



13 + 17=30. P. cuvifrons. 

 14+12 = 26. P. huetiiJcofcri. 



14 + 13 = 27. P. guentheri, Icrlhensls, i^Hlchct', 



14 + 17 = 31. P.S2>eUi. 

 15+15 = 30. P. lateralis. 



15 + 16 = 31. P. auritus. 



16 + 16 = 32. P.jentirdi. 

 16 + 18 = 34. P. maa-nps. 



