178 CTCIILTD.^.. 



often black ; dorsal sometimes edged with black ; the angles of the 

 caudal sometimes black ; young with rather indistinct dark bars on 

 the side. 



Total length 165 millim. 



Gold Coast, Ashantee, Lagos. — Types in Leyden Museum. 



1-4. Ad- Ancobra R., Gold Coast. Major Burton and 



Caj.t. Cameron (P.). 



5. Ad. ►^((cconda Lagoon, „ W. P. Lovvo, Es(j. (C). 



G-21, 22-41. Ad., Lagos Lngoon. Major (J. E. Bruce (P.). 

 hgr., & yg. 

 42. Skel. 



4:i-(;2. Yg. Lagos. „ 



CuWA. Hgr. Si yg. W. Africa. Mr. E. Rciclidt (P.). 



This and the preceding species may ultimately have to be regarded as 

 varieties of T. heudeloti. I am unable to find characters by which to 

 separate them sharply. 



18. TILAPIA NGOMENSIS. 

 Pellogr. Bull. See. Zool. France, xxxviii. lOlvi, p. 274. 



D(])th of body hardly 2 times in total length, length of head 3 times. 

 Snout nearly as long as eye, which is 3J times in length of head and 

 IJ times in interorbital width ; mouth extending to l;elow anterior 

 border of eye; teeth in 5 series, 00 in outer series of upjjcr jaw; 4 

 series of scales on the cheek. 10 gill-rakers on lower part of anterior 

 arch. Dorsal XVI 13 ; spines sube(pml from the seventh. Anal 

 HI 10. Pectoral a little longer than head, reaching vertical of origin 

 of anal. Ventral reaching anal. Caudal rounded. Caudal peduncle 

 deeper than long. Scales cycloid, 33 jB; lateral lines \y Yellowish, 

 with 7 broad brown bars on the sides and a large black spot at the 

 base of the first soft rays of the dorsal ; fins purplish. 



Total length 190 millim. 



Ngomo, Ogowe. — Type in Paris Museum. 



19. TILAPIA HAUGI. 

 Pellegr. Bull Soc. Pliilom. (10) iii. PJll, p. 274, fig. 



Depth of body 2 to 2\ times in total length, length of head 3 times 

 or slightly over 3 times. Head nearly twice as long as broad; snout 

 rounded, with straight upper profile, a little longer than broad, 

 as long as or a little shorter than post ocular purt of head ; eye 3^ to 4 

 times in length of head, 1^ to T| times in interobital width, a little less 



