the Family CicUliJjc. 43 



frontals ; parietal crests endiiif^ abore posterior part o£ 

 orbits; etlimoid suturally united with vomer; nasals con- 

 siderably expanded posteriorly ; pra3inaxillary processes not 

 reaching frontals ; maxillary siiort and broad, broadest below 

 palatine articulation ; posterior part of parasphonoid slightly 

 raised, bearing a pair of subcircular facets for articulation of 

 iipper pharyngeals. Vortebrte 32-34 (16-17 + lG-1 7); third 

 without inferior apophyses ; pra^caudals with parapophyses 

 from the fourth; ribs, except the tirst, on parapophyses. 



Tanganyika. 



Two species, C. qrandocuh's and C. furcifer [Paratilapia 

 furcifera, Bouleng.). 



14, LiMN'OCHROMis, gen. nov. 

 (type Pelinaiochromis auritus, Bouleng.). 



Dorsal XII-XYII 9-16. Anal III 7-12. Scales finely 

 denticulated, large, 32 to 42 ; two lateral lines. Mouth 

 terminal ; maxillaiy rather narrow, slightly exposed ; teeth 

 conical, in 2 to 4 seiics. Lower pliaryngeal triangular ; 

 teeth all slender or a few median posterior teeth slightly 

 enlarged. Occipital and parietal crests extending forward 

 to above middle or posterior part of interorbital region ; a 

 jnedian groove on frontals in front of occipital crest ; nasal 

 bones expanded posteriorly ; ethmoid well separated from 

 vomer ; prcemaxillary processes moderate or long, sometimes 

 extending to between the orbits ; posterior part of para- 

 sphenoid slightly raised, bearing a pair of transverse oval 

 facets for articulation of upper pharyngeals. Vertebra) 31 

 (15 + 16) to 37 (19 + 18); third with or without a pair of 

 inferior apophyses which do not meet below. 



Tanganyika; four species. 



In atklition to L. auritus this genus includes three species 

 placed by Boulcnger in Paratilapia — L. pfefferiy nigripinnisy 

 and leptosoma. L. auritus and L. leptosoma are very similar 

 in their osteology, and the other species are intermediate 

 between them in external characters. 



15. (!yph0TILAPIA, gen. nov. 

 (type Pelmatochroinis frontosuSj Bouleng.). 



Dorsal XV-XIX 8-10. Anal III 7-8. Scales cycloid or 

 feebly denticulated, large (28-36) ; two lateral lines. Frontal 

 region humped. Mouth terminal ; maxillary largely ex- 

 posed ; teeth in 3 to 5 series, outermost enlarged, conical 

 or some bicuspid, inner conical or some tricuspid. Lower 



