190 CICHWDJE. 



dorsal. Pectoral much longer than head and extending a good deal 



beyond origin of anal. Ventral reaching vent. CaudaH (mutilated in 



the type). Caudal peduncle nearly 1^ times as long as deep. Scales 

 3 21 



cycloid, about 27-28 j^ ; lateral lines j. Seven dark bars on the body ; 

 a black opercular spot ; a black spot at the base of the anterior soft rays 

 of the dorsal, above the fourth bar ; anal and ventrals dusky to blackish. 



Total length about 82-85 millim. 



Lake Barombi-ba-Kotta, a volcanic lake on the Cameroon Mountain. — 

 Type in Stockholm Museum. 



30. TILAPIA MELANOPLEURA. 



A. Dum. Arch. Mus. x. 1859, p. 252, pi. xxii. fig. 1 ; Bouleng. Proc. Zool. Soc. 



1889, p. 123; Pellegr. Mem. Soc. Zool. France, xvi. 11)04, p. 329, and Bull. 



Soc. Philom. (9) x. 1908, p. 131 ; Bouleng. Tr. Zool. Sjc. xviii. 1911, 



p. 117. 

 Tilapia affinis, A. Dum. t. c. p. 255 ; Bouleng. t. c. p. 127 ; Pellegr. Bull. Mus. 



Paris, 1900, p. 277. 

 Tilapia polycentra, A. Dum. t. c. p. 254 ; Bouleng. t. c. p. 128. 

 Chromis poll/centra, Giintli. Gat. Fish. iv. p. 270. 

 Chromis latus, Griinth. t. c. p. 271 (1862) ; Stcind. Verh. zool.-bot. Ges. Wien, 



xiv. 18G4, p. 227, pi. viii. figs. 1 & 2. 

 Chromis melanopleztra, Giinlh. t. c. p. 272, 

 Chromis aureus, Steind. t. c. p. 229, pi. viii. fig. 5. 

 Chromis niloticus, p;irt., Steind. Sitzb. Ak. Wien, Ix. 1870, p. 96. 

 Chromis cwruleomaculatus, Rochebr. Bull. Soc. Philom. (7) iv. 1880, p. 166, and 



Act. Soc. Linn. Bord. (4) vi. 1883, p. 132, pi. iv. fig. 3. 

 Chromis f aid herU^ Rochebr. tt, cc. p. 167, and p. 134, pi. v. fio-. 5. 

 Chromis afinis, Rochebr. Act. Soc. Linn. Bord. (4) vi. 1883, p. 131. 

 Chromis ogoiveiuis, Gihith. Ann. & Mag. N. H. (6) xvii. 1896, p. 271, and Proc. 



Zool. Soc. 1899, p. 717, and 1902, ii. p. 331. 

 Chromis rendalU, Bouleng. Proc. Zool. Soc. 1896, p. 915, fio-. 

 Tihqna rendalli, Bouleng. Tr. Zool. Soc. xv. 1898, p. 4, and Proc. Zool. Soc. 



1899, p. 126. 

 Tilapia lata, Bouleng. Proc. Zuol. Soc, 1899, p. 125, and Poiss. Bass. Congo, 



p. 466 (1901) ; Steind. Dcnkschr. Ak. Wien, Ixxxix. 1913, p. 60. 

 Tilajna sexfasciata, Pellegr. Bull. Mus. Paris, 1900, p. 276. 

 Chromis discolor, Gimth. Proc. Zool. Soc. 1902, ii. p. 332. 

 Tilajyia latifrons, Bouleng. Tr. Zool. Soc. xvIi. 1906, p. 571, pi. xl. 



Depth of body If to ^ times (rarely 2^ times) in total length, length 

 of head 3 to 3^ times. Head If to 2 times as long as broad ; snout 

 with straight or convex, or slightly concave upper profile, as lono as 



