1899.] SYRIAN FISHES OF THE FAMILY CICHTilD^. 99 



Synopsis of the Oenera. 

 I. No sheath to the vertical fins. 



A. Anal spines V to X ; teeth conical, at 



least in the outer row. 



Jaws with a band of very small conical teeth, with 



moderately enlarged canines in front 1. Lamprologiis ^(^\\i\\. 



Jaws with a band of very small conical teeth, with a 



few curved canines in front, the outer of which are 



very large and tusk-like 2. JicUdochromis Blgr. 



Jaws with a series of conical teeth followed by a broad 



band of minute tricuspid teeth 3. Telmaiochromis Blgr, 



B. Anal spines III ; teeth not notched, uni- 



cuspid, numerous. 



1. Teeth conical or fang-like ; alveolar 



surface of jaws narrow or moderately 

 broad. 



a. No pad-like papillose prominence close 



to the upper part of the branchial 

 arches. 



Teeth in one or two series, with more or less en- 

 larged or canine-like ones at the symphysis 4. Hemichrmnis Ptrs. 



Teeth in two or more series, outer longest and more 

 or less curved inward ; anal with 6 to 12 soft 

 rays 5. Paratilapia'SikY. 



Several rows of fang-like teeth ; scales small and ir- 

 regular ; anal with 1 G soft rays 6. Bathybates Blgr. 



Teeth in two series ; outer mandibular teeth pointing 



outwards, perpendicular to the others 7. Ectodics Blgr, 



b. A pad-like prominence close to the 



upper part of the branchial arclie^. 



Teeth in two or more series, outer largest and more 



or less distinctly curved inward 8. Pelmatachromis Stdr, 



Teeth in one or two series, some of the larger ones 



with the crown bent at an angle to the shaft and 



directed forward or backward 9. ChromidoHlapia Blgr. 



2. Teeth not conical. 



Alveolar surface of jaws extremely broad, with in- 

 numerable minute teeth with compressed, oblique 

 crowns 10. Corematodus Blgr. 



Jaws with rather large spatulate teeth with truncated 

 crowns disposed in oblique transverse rows of two 

 or three U. Eretmodus Blgr. 



0. Anal spines VI ; jaws with bands of 

 minute tricuspid teeth, an outer row of 

 bicuspid teeth, and enlarged conical teeth 

 at the sides of the prtemaxillary 12. Tropheus Blgv. 



D. Anal spines III or IV ; teeth all or part 

 notched or bi- or tricuspid, in two or 

 more rows. 



Jaws with broad bands of minute bicuspid teeth, with' 



an outer series of larger bicuspid teeth, and a 



single series of sharply differentiated conical teeth 



at the sides of the prsemaxillary 13. Simochromis Blgr. 



Alveolar surface of jaws narrow or moderately broad, 



all or most of the outer teeth bi- or tricuspid 14. Tilapia Smith. 



7* 



