TILAP1A. 



245 



interorbital width, and a little exceeds least depth of prseorbital ; mouth 

 rather large, f width of head, extending to below anterior border of eye ; 

 teeth small, in 4 or 5 series, 52 in outer series of upper jaw ; 5 or 6 

 series of scales on the cheek, width of scaly part equal to diameter 

 of eye. Gill-rakers short, 12 on lower part of anterior arch. Dorsal 

 XVIII 8 ; last spine longest, J length of head, f middle soft rays, 

 which are produced. Anal HI 8; third spine nearly as long as last 



Fig. 163. 



-:-^y,-..-0^m. 



Tilajjia zebra. 

 Type (P. Z. S. 1899). 



dorsal. Pectoral as long as head, not extending to vertical of origin 

 of anal. Ventral produced into a filament, extending beyond origin of 

 anal. Caudal rounded (?), densely scaled at the base. Caudal peduncle 

 a little deeper than long. Scales finely denticulate, 31 jg-; lateral lines 

 jjj^jj ; scales on occiput, nape, breast, and belly very small. Grey, with 

 6 dark brown bars ; a crescentic dark brown band on the forehead, 

 from eye to eye, followed by a second farther back, and a third in 

 front of the dorsal ; vertical fins grey ; three round white spots on the 

 posterior part of the anal ; ventrals blackish. 



Total length 105 millim. 



Lake Nyassa. 



1. Type. L. Nyassa. Miss M. Woodward (C.) ; 



Miss S. C. McLaughlin (P.). 



