1899.] SYKIAN FISHES OP THE FAMILY CICHLIB^. 143 



length, length of head 3 times. Snout 1| diameter of eye, which 

 is 4 times in length of head and 1^ to 1^ in interorbital wddth ; 3 

 or 4 series of scales on the cheek. Dorsal XVI-XVIII 17-18. 

 Anal VIII-IX 13-14. Caudal peduncle about 1| as deep as long. 

 Scales 32-34 y^ ; lat. 1. ^^. Olive or brown, uniform or with 

 very indistinct darker bars ; pectoral yellowish. 



Total length 165 millim. 



Madagascar. 



In concluding this revision, I append a table of the number of 

 vertebrae in the 24 different forms 1 have been able to examine. 



Total number. Prsecaudal. Caudal. 



Lamprologus congoensis 31 15 16 



JulidocJiromis ornatus 34 17 17 



Telmatochromis temporalis 33 16 17 



Hemichromis fasciatus 28 15 13 



„ bimaculatus 26 14 12 



Paratilapia polleni 27 13 14 



„ sacra 28 15 13 



„ robusta 36 17 19 



„ longiceps 38 19 19 



Bathylates fexox 36 17 19 



Pelmatoclirorais subocellatus .... 25 13 12 



Ohromidotilapia Jcingsleyce 27 14 13 



Corematodus shiranus 32 15 17 



Eretmodus cyanostictus 30 15 15 



Tropheus moorii 33 17 16 



Tilapia nilotica 32 17 15 



„ galila^a 32 17 15 



„ lata 28 15 13 



„ desfontainesii 31 15 16 



,, oligacanthus 28 14 14 



Steatocranus gihbiceps 30 16 14 



Docimodus johnstoni 32 14 18 



Perissodus microleiois 35 17 18 



Par etroplus poly actis 34 17 17 



EXPLANATION OF THE PLATES. 



Plate XI. 



Fig. 1. Tilapia marice Blgr., p. 122. 



2. „ livingstonii Blgr., p. 134. 



3. ,, desfontainesi Lacep., p. 135. 



Plate XII. 



Fig. 1. Tilapia rostrata Elgr., p. 131. 



2. „ sebra Blgr., p. 137. 



3. „ aurata Blgr., p. 137. 



