190 CICIILrD.E. 



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

 beyond origin of anal. Ventral reaching vent. Caudal ! (mutilated in 

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



Q . 21 



cycloid, about 27-28 ^ ; 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. 1904, p. 329, and Bull. 



Soc. Philom. (9) x. 1908, p. 134 ; Bouleng. Tr. Zool. Soc. xviii. 1911, 



p. 417. 

 Tilapia affunis, A. Dum. t. c. p. 255 ; Bouleng. t. c. p. 127 ; Pollegr. Bull. Mus. 



Paris, 1900, p. 277. 

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

 Chro?nis poli/centra, Giintli. Gat. Fish. iv. p. 270. 

 Chromis latus, Giinth. t. c. p. 271 (1862) ; Steind. Verb, zool.-bot. Ges. Wien, 



xiv. 1864, p. 227, pi. viii. figs. 1 & 2. 

 Chromis melanopleura, Giinth. t. c. p. 272. 

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

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

 Chromis ccendeomaculatus, Rochebr. Bull. Soc. Philom. (7) iv. 1880, p. 1G6, aud 



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

 Chromis faidherbi, Rochebr. tt. cc. p. 167, and p. 134, pi. v. fig. 5. 

 Chromis affinis, Rochebr. Act. Soc. Linn. Bord. {i) vi. 1883, p. 131. 

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



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

 Chromis rendalli, Bouleng. Proc. Zool. Soc. 1896, p. 915, fig. 

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



1899, p. 126. 

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



p. 466 (1901) ; Steind. Denkschr. Ak. Wien, lxxxix. 1913, p. 60. 

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

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

 Tilapia latifrons, Bouleng. Tr. Zool. Soc. xvii. 1906, p. 571, pi. xl. 



Depth of body If to 2-J times (rarely 2\ times) in total length, length 

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

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



