. The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . line,silvery, with a darker lateral stripe ; dorsal and anal with greyish horizontal streaks. Total length, 80 millim. Described from a single specimen from Mbity Rocks. SERRANI]).^^:. 25. Lates MiCROLEPis.—Blgr. 1898. (Fig., p. 171.) Originally described from young specimens, 155 millim. long. The adult,measuring800 millim., and weighing 14 lbs., has, as could be expected, very differentproportions, and is of a uniform dark silvery colour. The eye is contained 9 tim
. The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa . line,silvery, with a darker lateral stripe ; dorsal and anal with greyish horizontal streaks. Total length, 80 millim. Described from a single specimen from Mbity Rocks. SERRANI]).^^:. 25. Lates MiCROLEPis.—Blgr. 1898. (Fig., p. 171.) Originally described from young specimens, 155 millim. long. The adult,measuring800 millim., and weighing 14 lbs., has, as could be expected, very differentproportions, and is of a uniform dark silvery colour. The eye is contained 9 timesin the length of the head, which is \ of the total ; longest dorsal spine, i length ofhead. Caudal peduncle and caudal fin as in the young. Native name, Sangala. ^^:. 26. Lamprologus tetracanthus.^—Blgr. 1899. 27. Lamprologu-s elong.\tus.—Blgr 1898. (Fig., p. 213, upper.) Six to 8 large canine teeth in front of each jaw, f(jllowed by a broad band ofminute villiform teeth ; lateral teeth very small. Depth of body 4 times in totallength; length of head 2\ to 2]. Snout twice as long as diameter of eye, which. o I70 THE IWXGANVIKA PROBLKM. is 5 limes in length of head and ecjuals interorhilal width ; maxillar)- extendingto IxMow anterior border of eye ; cheeks naked ; opercles and occiput moderately long, 12 on lower part of anterior arch. Dorsal ; spines slightly increasing in length to the last, which measures \ length ofhead ; longest soft rays half length of head. Tectoral half length of head, \entralreaching vent. Anal V. 8 ; spines increasing in length to the last, which equalslongest dorsal. Caudal truncate. Caudal peduncle \h as long as deep. Scales 90-95 ; lat. I. ^ Vjrown, with darker s{X)ts, having a tendency to 22—2o 20—3^ form cross-bars ; caudal fin with round dark spots between the length, 113 ;ed from one specimen from Mbity Kocks, and one from Kinyamkolo. 28. LaMPROLOGUS
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