The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . h, 220 millim. Described from several specimens from Maswa and from the south end of LakeTanganyika. 48. Paratilapia leptosoma.—Blgr. 1898. (Fig., p. 201, lower.) Teeth small, in three series in the upper jaw, in four in the lower, outer of body, 4 to 43 times in total length ; length of head, 3. Snout with straightupper profile, as long as or a little longer than the eye, the diameter of which is 3^to 3§ times in length of head, and equals interorbital w
The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . h, 220 millim. Described from several specimens from Maswa and from the south end of LakeTanganyika. 48. Paratilapia leptosoma.—Blgr. 1898. (Fig., p. 201, lower.) Teeth small, in three series in the upper jaw, in four in the lower, outer of body, 4 to 43 times in total length ; length of head, 3. Snout with straightupper profile, as long as or a little longer than the eye, the diameter of which is 3^to 3§ times in length of head, and equals interorbital width ; maxillary extending tobelow anterior border of eye, or not quite so far ; two series of scales on the cheek ;opercle covered with scales. Gill-rakers long, slender and close set, 20 on lowerpart of anterior arch. Dorsal XII., 14-15 ; spines increasing in length to the last,which measures | length of head, and is nearly as long as the soft rays. Pectoral §length of head. Ventral reaching origin of anal. Anal III., 10-12 ; third spinelongest, a little shorter than longest dorsal. Caudal feebly emarginate. Caudal. >4 THE TANGANYIKA PROBLEM. peduncle twice as long as deep. Scales very finely denticulate on the edge, 39-402—3 27—31 —-—- ; lat. 1, . Brown, lighter beneath; dorsal and anal with or without 11 11—13 ° brown longitudinal streaks ; caudal spotted with black or brown at the length, 87 from two specimens from Kinyamkolo and two from Mbity Rocks. 49. Paratilapia nigripinnis.—Blgr. 1901. (Fig., p. 195, lower.) Depth of body 4 times in total length, length of head 3 to 3} times. Snout withstraight upper profile, as long as diameter of eye, which equals interocular width,and is contained 3^ times in length of head; mouth extremely protractile;maxillary extending to below anterior border of eye; teeth very small, in threerows; two or three series of scales on the cheek; opercle covered with long and thin,
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