Fishes from the Cameroon. Al 
From these measurements it will be seen that the relation 
between head and body is almost the same, but the height 
of body increases with age, which causes the distance from the 
snout to anal and ventral fins to be comparatively larger in the 
older specimens. The diameter of the eye compared with 
the length of head decreases a good deal, but the snout is 
enlarged with age *, 
Tilapia lata, Gthr., var. camerunensis, nov. 
A specimen from Meme River resembles 7. ata in almost 
every respect except that it has a smaller number of scales, 
so that only twenty-six can be counted in a longitudinal 
series. In this respect it resembles 7. Rangit?, Duméril, 
but differs on the other hand from that species in having 
shorter pectorals, which do not extend even to the vertical 
through the origin of the anal, still less beyond the same ; 
but the pectoral is decidedly longer thanthe head. ‘There are 
XVI dorsal spines and 12 soft rays. At the commencement 
of the soft dorsal there is, as in 7’. data, a large black spot, 
and behind it three blackish streaks which are nearly 
vertical, but above the spot they curve forward and then 
become more longitudinal. There is a black spot near the 
upper end of the posterior margin of the operele, and this is 
almost continued into a larger, less conspicuous, dark blotch 
extending downwards on the opercle. Four dusky transverse 
bands may be traced across the body. In other respects it 
agrees with the descriptions of 7. lata f. 
The specimen measures 128 millim. It was caught high 
up in the Meme River. 
This form seems to be intermediate between 7. lata and 
T. Rangit; whether it deserves specific rank or not I am 
unable to decide on only one specimen. 
Tilapia microcephala, Bleeker. 
Sq. 2741. Lat. lin. sup. 21; lat. lin. inf. 10-11, 
1D), NOW Ee Ee ee ae 
Height of body contained fully twice in the total length 
* Since the above was in print Mr. G. A. Boulenger has described 
another apparently nearly related species from the Niger Delta (Proce. 
Zool. Soc. for Noy. 18, 1902) under the name P. Pellegrini. The latter 
differs in having a larger number of scales (28-29) and a different colora- 
tion, besides some other differences in the relative proportions, &e. 
+ Conf. Boulenger, ‘A Rev. of the Afr, and Syr, Fishes of the Fam. 
Cichlide,” Proc. Zool. Soc, 1899, 
