276 ClCHLUm 



longest dorsal. Pectoral as long as head. Ventral reaching vent or 

 origin of anal. Caudal truncate. Caudal peduncle as long as deep. 

 Scales feebly denticulate, 31-36 ^ ; lateral lines j^. 01ive above '> 

 whitish beneath, young with 9 or 10 more or less distinct darker bars 

 on the body ; gill-membranes sometimes black, or with black spots ; 

 fins greyish, dorsal with a black border, sometimes with a dark brown 

 band in addition ; anal sometimes with a bright ocellar spot. 



Total length 195 millim. 



Lake Tanganyika. 



1-4. Types. Ujiji. E. Coode Hore, Esq. (C). 



5. Ad. Msambu. Prof. J. E. S. Moore. (C.). 



6. Hgr. Sumbu. Dr. W. A. Cunniugton (C). 



7. Ad. Vua. 



8. Ad. Pembe. 



9-11. Ad. & yg. Kinyamkolo. Prof. J. E. S. Moore (C). 



12-17. Ad. & hgr. Niamkolo. Dr. W. A. Cunnington (C.J. 



18. Skel. ,, ,, 



5. TROPHEUS. 



Bouleng. Tr. Zool. Soc. xv. 1898, p. 17, and Poiss. Bass. Congo, p. 449 (1901) ; 

 Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 305. 



Body moderately elongate ; scales denticulate ; two incomplete lateral 

 lines. Jaws angularly bent at the sides, with bands of very small 

 tricuspid teeth, and an outer row of bicuspid teeth ; sides of the pras- 

 maxillaries with a series of abruptly differentiated conical teeth ; mouth 

 nearly straight and transverse when closed ; maxillary concealed under 

 the prseorbital. Dorsal with 20 or 21 spines, anal with 4 to 6. 

 Occipital and parietal crests strong, extending to between the orbits. 

 Vertebra? 33 (17 + 16). 



Lake Tanganyika. 



Two species : — 



D. XX-XXI 5-6 : A. V-VT 5-6 ; Sc. 30-32 ^. 1. T. nwoni, Blgr., p. 276. 

 D. XX 5-6 ; A. IV 6-7 ; Sc. 28-30 ~. . . . 2. 1. annectens, Blgr., p. 278. 



1. TROPHEUS MOORI1. 

 Bouleng. Tr. Zool. Soc. xv. 1898, p. 18, pi. v. fig. 2, and Poiss. Bass. Congo, 

 p. 449 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 305, pi. vii. 

 fig. 2, 



Depth of body 2| to 2§ timee in total length, length of head 3j to 



