248 



C1CHL1D3:. 



Depth of body 2^ to 3 times in total length, length of head 3 to 3, 

 times. Head 2 to 2^ times as long as broad; snout with straight 

 upper profile, as long as broad, as long as postocular part ol head ; eye 

 3^ to 31 times in length of head, equal to or a little greater than inter- 

 orbital width, and greater than pviEorbital depth ; mouth rather small 

 1 to f width of head, extending to below nostril or to between nostril 

 and eye; teeth rather small, in 3 or 4 series, 30 to 40 in outer series of 

 upper jaw; 3 or 4 series of scales on the cheek, width of scaly part less 

 than diameter of eye. Gill-rakers short, 10 to 12 on lower part of 

 anterior arch. Dorsal XV-XVIII 11-12 ; spines increasing m length 

 to the last, which is a little less than ^ length of head ; longest soft rays 

 f length of head. Anal III 8-10 ; third spine a little shorter than last 



Fis. 1G6. 







Tilupia pleurotcenia. 

 Type (Tr. Z. S. 1901). 



dorsal. Pectoral a little shorter than head, not reacliing origin of anal. 

 Ventral reaching vent or a little beyond. Cau lal with rather deep 

 notch ; rays free from scales. Caudal peduncle Ih times as long as deep. 

 Scales cycloid or very finely denticulate, 32-35 n_i2; lateral lines f^fy- 

 Brownish above, whitish beneath ; a blackish lateral band along the 

 body, from the operculum to the root of the caudal; fins greyish, soft 

 dorsal and caudal with small round white spots. 



Total length 110 millim. 



Lake Tanganyika and Rusisi Kiver. 



1-G. Types. N. end oE L. Tanganyika. Prof. J. E. S. Moore (C). 



7. Skek 



8-12. Types. Husi^i R. 



