2G4 Classification of the Familij Ciclilidfio. 



conical. Pharyngeal apophysis formed by parasphcnoid in 

 middle and basioccipital at sides. Scales cycloid or feebly 

 denticulate. Dorsal XIV-XVIII 13-16. Anal III 8-12. 



Synopsis of the Species. 



I. 5 or 6 series of scales on cheek ; prsemaxillary pedicels extending 



to between orbits 1. macrocephalus. 



II. 7 to 10 series of scales on clieek. 

 Prcemaxillary pedicels not reaching beyond anterior 



edge of orbits : head 2 to 2\ as long as broad . . 2. thnmhergii. 

 Praemaxillary pedicels extending to between orbits ; 



head 2^ to 3 as long as broad 3. angusticeps. 



1. Serranochromis macrocephalus, Bouleng., 1899. 



Paratilapia macrocephula, Bouleng. Cat. Afr. Fish. iii. p. 317, tig. 210. 

 raratilapia longimmms, Bouleng. t. c. p. 319, tig. 212. 



L. Mweru and R. Luapula ; L. Ngami. 



2. Serranochromis thumberyii, Castehi., 1861. 



Paratilapia thumbergii, Bouleng. t. c. p. 328, fig. 220. 



Paratilapia ellenlergeri, Gilchr. & Thomps. Ann. S. Afric. Mus. xi. 



1918, p. 621, fig. 141. 

 l^aratilapia zaynbesensis, Gilchr. & Thomps. t. c. p. 522, fig. 142. 

 Pelmatochromis ngamensis, Gilchr. & Thomps. t. c. p. 539, fig. 155. 



Katanga and Angola to L. Nyassa. 



3. Serranochromis angusticeps, Bouleng.^ 1907. 

 Paratilapia angusticeps, Bouleng. t. c. p. 321, figs, 213, 214. 

 L. Bangwelu ; Angola ; L. Ngami ; Zambesi. 



13. Steatocranus, Bouleng., 1899 

 (type Steatocranus gibbiceps, Bouleng,). 



A single species from the Congo, apparently related to 

 Haplochromis polyacanthus, but distinguished by the incisor- 

 like teeth. 



14. Lamprologus, Schilthuis, 1891 

 (type Lamprologus cojigolensis, Schilth.). 



This genus probably originated in Tanganyika, where the 

 species are numerous and diversified. The three Congo species 

 form a natural group with 5 to 7 anal spines, subacuminate 

 caudal, second pelvic ray longest, etc. L. obliquus, Nichols 

 & Griscom, 1917, is doubtfully distinct from L. mocquardii. 



