. The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Paratilapia vittata. See p. 176. interocular width ; maxillary extending to between nostril and eye ; three series ofscales on cheek ; opercle covered with scales. Gill-rakers short, 12 on lower part ofanterior arch. Dorsal XV. 14; spines slender, equal from the fifth, which measures. V^ Xenotilapia hima. See p. 190. nearly ?, length of head ; soft rays not longer than the spines. Tccloral acutelypointed, nearly as long as head, extending as far as origin of anal. Ve
. The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . Paratilapia vittata. See p. 176. interocular width ; maxillary extending to between nostril and eye ; three series ofscales on cheek ; opercle covered with scales. Gill-rakers short, 12 on lower part ofanterior arch. Dorsal XV. 14; spines slender, equal from the fifth, which measures. V^ Xenotilapia hima. See p. 190. nearly ?, length of head ; soft rays not longer than the spines. Tccloral acutelypointed, nearly as long as head, extending as far as origin of anal. Ventralreaching vent. Anal III. 10 ; third spine a little stronger and shorter than longest 192 THE TANGANYIKA PROBLEM. dorsals. Caudal with deep crcscentic notch. Caudal peduncle 2\ as long as deep. 6-7 ^^-52 Scales 55 — , ; lal. i 26 . Ialc brown al)ove, yellowish beneath ; a small dark brown opercular spot ; a round brown spot on caudal peduncle at root of caudalfin ; dorsal fin greyish, the soft portion with round white spots, other fins yellowish. Total length, 175 millim. Described from a single specimen. Native name, Murungi. 59. Trem.\toc.\r.\ —Blgr. 1899. (Fig., p. 179, upper.) Depth of body 3.^ times in total length, length of head 2\ to 3. .Snout withcurved upper profile, shorter than the eye, which is in length of head andexceeds interocular width ; mouth extending to bel
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