the Famil// CicIiIiJie. 35 



B. Mouth terminal or aubterminal; jaws with an outer series of 

 enlarged uni- or bicuspid teeth and 2 or more iuner series 

 of small tricuspid or compressed teeth. Ethmoid united with 

 vomer bv suture; inferior apophyses of third vurtebra meeting 

 below but not united. D. XV-XXl 5-12. A. lU-Vl 5-10. 

 Scales 30-4a 



1. D. XV-XX 8-12. A. Ill 6-10. 



Mouth terminal ; outer teeth bicuspid or some 



conical, inner mostly tricuspid 4. Limnotilapia, 



Mouth terminal ; teeth compressed, outer bi- 

 cuspid and inner tricuspid in young, all 



unicxispid in adult 5. Lobochilotes. 



Mouth subterminal ; an outer series of curved 



conical teeth and a baud of small tricui.pid 



teeth G. Gvphyrochromis. 



Mouth subterminal ; prfemaxillaries with an 



outer series of teeth, which are bicuspid 



anteriorly and conical laterally, followed 



by a band of small tricuspid teeth 7. Svnochromis. 



2. D. XX-XXI 5-6. A. IV- VI 6-7. Mouth wide, subterminal, 



with a band of small tricuspid teeth and an outer series 

 of bicuspid teeth ; a single series of conical teeth at sides of 

 praemaxillaries 8. Tropheus. 



C. Mouth subterminal or inferior ; teeth tricuspid or conical. 



D. XII-XIV 12-14. A. Ill 8-ip. Scales large, 34 to 40. 



Mouth subterminal ; teeth small, fixed, uni- or 



tricuspid, iu narrow bands 9. Ophthahnotilapia. 



Mouth subterminal ; teeth movable, slender, 



tricuspid, iu broad bands 10. Cunningtoiiia. 



Mouth transverse, inferior ; teeth slender, tri- 

 cuspid 11. Asprutilaina. 



D. Mouth subterminal ; teeth sUuder, tricuspid, movable, in 



broad bands. D. XVII-XX 8-10. A. Ill 7-8. Scales large, 

 32-35 12. Petruchromis. 



E. Mouth subterminal ; teeth fixed, tricuspid or conical. D. XIII- 



XIV 12-14. A. Ill 9-10. Scales small, 55-65. 



13. Cyathopharynx. 



F. Mouth terminal; teeth conical. D. XII-XIX 8-lG. A. Ill 7- 



12. Scales large, 28-42. 



Maxillary slightly exposed ; interorbital region 

 liattish ; occipiUil crest not extending 

 forward beyond middle of orbits 14. Limnochromis. 



Maxillary considerably exposed ; frontal region 

 humped ; occipital cre.^t extending for- 

 ward at least to anterior end of inter- 

 orbital region 15. Cyphotilapia. 



3* 



