the Family Cichlide. 41 
8. TRoPHEUS, Bouleng., 1898 (type 7. moorii, Bouleng.). 
Dorsal XX-X XI 5-6. Anal IV-VI 5-7. Scales feebly 
denticulate, large (28-32). Mouth subterminal, wide, with 
transverse bands of small tricuspid teeth and a series of larger 
bicuspid teeth in front of them ; sides of premaxillaries with 
a series of well-differentiated conical teeth. Vertebrae 33 
(17+16). In other characters like Simochromis. 
Tanganyika ; two species. 
9. OPHTHALMOTILAPIA, Pellegr., 1904 
(type Tilapia boops, Bouleng.). 
Dorsal XTIJ-XIIT 12-14. Anal IIT 8-10. Scales den- 
ticulate, large (34-40) ; two lateral lines, the upper nearly 
reaching caudal fin. Kye large; snout short and broad ; 
mouth subterminal, wide, nearly transverse ; distal end of 
maxillary slightly exposed. ‘Teeth in jaws firmly attached, 
close-set, slender, slightly curved at tip, uni- or tricuspid, in 
narrow bands; outermost series enlarged. Lower pharyngeal 
subtriangular, with slender teeth. Parietal crests not ex- 
tending quite so far forward as occipital crest, which ends 
above middle of orbits behind a median groove on the frontals 
which widens out forwards; nasals scarcely broader pos- 
teriorly than anteriorly ; pramaxillary processes not reaching 
frontals ; maxillary moderately broad ; a thin-walled auditory 
bulla formed by prootic and basioccipital ; posterior part of 
parasphenoid slightly raised, bearing a pair of transverse oval 
facets for articulation of upper pharyngeals. Vertebra 34 
(16418); third with a pair of inferior apophyses ; precaudals 
with parapophyses from third; ribs in sockets at or near ends 
of parapophyses. 
‘Tanganyika. 
Two species, O. boops and O. ventralis (Paratilapia 
ventralis, Bouleng.), the latter differing from the former in 
the loss of the lateral cusps of the teeth. 
10. CunnineToNIA, Bouleng., 1906 
(type C. longiventralis, Bouleng.). 
Dorsal XIII 13-14. Anal III 8-9. Scales denticulate, 
large (38-43). Differs from Ophthalmotilupia in the dentition; 
teeth in jaws very slender, movable, tricuspid, in rather 
broad bands. - 
Tanganyika ; a single species. 
