688 On new Fishes from Tanganyika Territory. 
not extending downwards beyond base of pectoral. Oceipito- 
nuchal shield rough like the occiput, obtusely tectiform, longer 
than broad, with pointed posterior process. Humeral process 
much longer than broad, more or less distinctly keeled, 
sharply pointed, extending as far back as occipito-nuchal 
process. Dorsal I 6-7 3 spine equal to or slightly shorter than 
head, feebly curved, anterior edge smooth except for two or 
three serrations at the tip, posterior edge feebly serrated, 
Adipose fin 3 to 4 times as long as deep, 14 to a little more 
than twice its distance from rayed dorsal. Anal IV 7; 
rounded. Pectoral spine shorter than head, strongly serrated 
on both sides, not reaching pelvics. Pelvics not reaching anal. 
Caudal forked, upper lobe the longer. Caudal peduncle 
as long as deep, or slightly deeper than long. Coloration 
generally uniform, young sometimes with darker spots 
separated by a pale network ; a black blotch at base of dorsal 
fin; dorsal and caudal sometimes with series of dark spots. 
Nine specimens, 70 to 180 mm. in total length. 
Near S. zambesensis and S. depauwt. 
Tilapia urolepis, sp. n. 
Depth of body 24 in the length, length of head nearly 3. 
Hlead twice as long as broad. Snout rounded, with straight 
upper profile, slightly broader than long, as long as postocular 
part of head. Eye 43 in length of head, equal to depth of 
preorbital; interorbital width 27 in length of head. Mouth 
rather more than 2 width of head; Jaws equal anteriorly ; 
maxillary extending to between nostril and eye; teeth 
moderately slender, in 5 series, about 70 bicuspid teeth in 
outer series of upper jaw. 3 series of scales on cheek, width 
of scaly part nearly equal to diameter of eye. Gill-rakers 
short, 20 on lower part of anterior arch. Dorsal XVII 13; 
last spine longest, } length ofhead; longest soft rays about ? 
length of head. Anal IL110; third spine shorter than longest 
dorsal. Pectoral as long as head, nearly reaching vertical 
from origin of anal. Pelvics almost reaching anal. Caudal 
rounded (?), densely scaled. Caudal peduncle twice as deep 
as long. Scales cycloid, 32 in a longitudinal series, 43 from 
origin of dorsal to lateral line. Reddish brown, with irregular 
dark blotches on body; a dark opercular spot, and a dark 
spot on each side of the nape. 
A single specimen, 190 mm. in total length. 
Differs from 7. nélotica in having the caudal densely scaled, 
and in the longer snout ; and from JZ’, lepidura chiefly in the 
character of the dentition. 
