The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Paratilapia pfefferi. See p. Ectodus longianalis. See p. specimen figured on p. 175. 2o6 THE TANGANYIKA PROBLEM. tricuspid, in 3 rows ; 2 or 3 series of scales on the cheek ; large scales on theopercle. Gill-rakers short, 13 on lower portion of anterior arch. Dorsal ; spines slender, equal from the seventh, which measures nearly \ length of head ;soft rays scarcely longer. Pectoral pointed, as long as head, reaching originof anal. Ventral
The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Paratilapia pfefferi. See p. Ectodus longianalis. See p. specimen figured on p. 175. 2o6 THE TANGANYIKA PROBLEM. tricuspid, in 3 rows ; 2 or 3 series of scales on the cheek ; large scales on theopercle. Gill-rakers short, 13 on lower portion of anterior arch. Dorsal ; spines slender, equal from the seventh, which measures nearly \ length of head ;soft rays scarcely longer. Pectoral pointed, as long as head, reaching originof anal. Ventral produced into a filament, extending beyond origin of anal. AnalIII. S-9 ; third spine as long as and stronger than longest dorsal spines. Caudaldeeply emarginate, crescentic. Caudal peduncle nearly twice as long as deep. Scales thin, without denticulation, 39-40 — —- ; lat. I -——. Brown above, 14—!5 15—19 white beneath ; a blackish opercular spot. Total length, 90 millim. Described from two specimens from Msambu. 76. Tilapia grandoculis.—Blgr. 1899. (Fig. p. 193. Lower.) Teeth very small, in 4 or 5 series in both jaws, of outer series large
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