the Family Ciclilida3. 49 



28. IIemibates, gen. nov. 

 {ty\^Q Paratilapia stenosovia, Bouleng.). 



Dorsal XV 13. Anal III 12-li. Scales cycloid, small 

 (GO-70) ; two lateral lines, the upper nearly reaching caudal 

 fill. Mouth moderate, terminal, with lateral cleft; maxillary 

 slightly exposed distally ; teeth small, conical, curved, in 

 2 or 3 series, outer erect and fixed, inner pointing hackwards, 

 depressible. Lower pharyngeal triangular, with slender 

 teeth. Parietal crests ending at edge of t'rontals above middle 

 of orbits ; occipital crest ending behind a short m< diau 

 depression on anterior part of frontals; nasals somewhat ex- 

 panded posteriorly ; prtemaxillary processes reaching frontals ; 

 maxillary broadest below palatine articulation, moderately 

 broad distally ; base of skull with a low, broad convex 

 apophysis, with articular surface for upper pharyngeals formed 

 in the middle by the parasphenoid, and at the sides by the 

 basioccipital. Third vertebra without inferior apophyses. 



Tanganyika ; a single species. 



29. Bathybates, Bouleng., 1898 (type B.ferox, Bouleng.). 



Dorsal XIII-XVII 11-17. Anal III 14-18. Scales cy- 

 cloid, small (65-150) ; two lateral lines, the upper extending 

 nearly to caudal tin. Mouth large, terminal, with lateral 

 cleft; maxillary hidden: teeth strong, curved, conical, in 2 

 to 4 series, outer fixed, inner depressible. Lower pharyngeal 

 triangular, with slender teeth. Parietal crests ending near 

 edge of Irontals above middle of orbit; occipital crest ex- 

 tending as far forward or a little farther, ending behind a 

 median depression on the frontals which widensout anteriorly; 

 elhmoid united with vomer by suture; nasals somewhat 

 expanded posteriorly ; prjBniaxillary processes not reaching 

 frniitals ; maxillary broadest below palatine articulation, 

 moderately broad distally ; base of skull with a low, broad, 

 convex apophysis, with the articular facets for the upper pha- 

 ryngeals well separated, oblique, formed by the parasphenoid 

 in tiie middle and the basioccipital at the sides. Vertebnu 

 3u-3G (10-17+19-20) ; third without inferior apophyses. 



Tanganyika; six species. 



30. IIaplotaxodon, Bouleng., 1906 

 (typo H. micrulepis, Bouleng.). 



Dorsal XVII-XVIII 11-13. Anal III 9. Scales small 

 (70-80) ; two lateral lines, the upper nearly reaching caudal 



Aim. c& May. N. Hint. Ser. 9. Vul. v. 4 



