108 On Two neio Freshioater Fishes. 



XIX. — Descriptions of Two neio Freshwater Fishes discovered 

 hy Dr. W. J. Ansorge in Mossamedes, Angola, ^y G. A. 

 BOULENGEK, F.R.S. 



Laheo Ansorgii. 



Body strongly compressed, its depth equal to length of 

 head and contained 4 times in total length. Head once and 

 2 as long as broad ; snout broad, truncate, feebly projecting, 

 beset with conical horny tubercles ; eye nearly perfectly 

 lateral, its diameter 4 times in length of head and once and | 

 in iuterorbital width ; width of mouth, with lips, about half 

 that of head ; rostral flap not denticulated ; lips bordered 

 with rounded papillre, their inner surface with numerous 

 transverse plicge ; two barbels on each side, anterior ^, poste- 

 rior I diameter of eye. Dorsal IV 10, with concave upper 

 border, a little nearer root of caudal than end of snout, longest 

 ray slightly longer than head. Anal III 5, nearly reaching 

 root of caudal. Pectoral nearly as long as head, not reaching 

 base of ventral, which is below middle of dorsal. Dorsal 

 deeply forked, with acutely pointed lobes. Caudal peduncle 

 slightly longer than deep. Scales 36 f,, 4 between lateral 

 line and root of ventral, 16 round caudal peduncle. Silvery, 

 back, brownish. 



Total length 65 mm. 



A single specimen from shallow swamps at Dongwenna. 



A very distinct species, to be placed between L. barbatus, 

 Blgr., and L. capensis, A. Smith. 



Paratilapia angusticeps. 



Depth of body about 3 times in total length. Head very 

 strongly compressed, 2'^ to 3 times in total length; lower 

 jaw projecting ; preemaxillary processes very long, extending 

 to between the eyes ; snout pointed, twice as long as the eye 

 in the adult (not' longer than the eye in the young) ; eye 3^ 

 (young) to 5 times in length of head, its diameter at least 

 equal to interorbital width ; mouth very oblique, extending 

 to below anterior border of eye ; teeth hi 3 or 4 series, outer 

 laro-est ; scales on cheek small, in 7 to 9 series ; large scales 

 on die opercle. Gill-rakers short, 11 or 12 on lower part of 

 anterior arch. Dorsal XV-XVl 14-16; spines slightly 

 increasing in length to the last, which measures I to f length 

 of head. Anal III 11-13 ; third spine stronger and as long 

 as or a little shorter than last dorsal. Pectoral 5 to f length 



II 



