40 Mr. C. T. Uecran — Chissijimti'on of 



of Tihipin only 7". ziHii jind T. husumnna retain the sutural 

 union of the ethmoid mil vomer, and only T. ImeUikoferi 

 iias the mamlibiilar rami t'onned as in Limnotilapia. 



'). LoBOCiiiLOTES, Bon'enfr., 1015 (type L. lallatus, 



Bouleng.). 



Dorsal XVTT-XTX 9-11. Anal III 0-8. Scales feebly 

 denticulate, huire (1^8-^5) ; two lateral lines. Mouth ter- 

 minal ; lips tliit;k ; 3 to 5 series of compressed teeth, outer- 

 most bicuspid and inner tricuspid in y<Mincj, all rounded or 

 truncate, without cusps, in the adult. Lower pharyn^real 

 with slender teeth and with a criouji of lar;je blunt teeth in 

 the middle posteriorly. Skeleton asin LimnotilupiadarJctinii; 

 vertebraj 32 (15+17). 



Tanganyika. A single species. 



6. GepHYROCIIROMIS, IJouleng., 1901 (type G. moorii^ 



Boulong.). 



Dorsal XVIT 8. Anal TIT 7. Scales feebly denticulate, 

 large (30) ; two lateral lines. ]\Iouth subterminal, rather 

 wide; jaws with a band of .small tricuspid teeth and an outer 

 series of enlarged curved conical teeth, those of the pr;i3- 

 maxillaries gradually decreasing in size posteriorly, but the 

 last 2 or 3 en each sitle again enlarged. 



Tanganyika. A single species. 



Very near Limnotilapia and Sivwchromis. 



7. SlMOCilROMiS, Bouleng., 1898 (type -S'. diagramma, 



Gunth.). 



Dorsal XYII-XIX 9-10. Anal III 7-9. Scales feebly 

 denticulate, large (33-36) ; two lateral lines. Mouth sub- 

 terminal, rather wide ; jaws with a band of small tricuspid 

 teeth and an outer series of larger teeth which are bicuspid 

 anteriorly and conical at the sides of the prtemaxillaries. 

 Lower pharyngeal triangular, witli slender uni- or bicuspid 

 teeth. Vertebia) 32 (15+17). Skeleton as in LiniuoliJapia 

 danlemtii. 



Tanganyika ; a single species. 



Siviochromis differs from Limnotilapia in the form of the 

 mouth and from Ciephyruchrotnis in the dentition. 



