OF FISHES FROM LAKE TANGANYIKA. 
bo 
or 
extending quite so far as the occipito-nuchal shield, which is 14 as long as broad and 
reaches the first soft ray of the dorsal. Anal IIL 7. Caudal deeply bifureate. Skin 
smooth. Pale reddish brown above, with very numerous blackish-brown round spots, 
which are smallest on the head and nape; lower parts and barbels white, unspotted ; 
ventrals yellow ; dorsal and caudal broadly edged with yellow. 
Total length 240 millim. 
A single specimen from Sumbu. 
29. MALAPTERURUS ELECTRICUS Gm. 
The Electric Cat-fish is widely distributed, being on record from the Nile, the 
Niger, the Ogowe, and the Congo. 
CYPRINIDS. 
30. LaBEo, sp. inc. 
An unmistakable figure of a Zabeo is among Mr. Moore's sketches, and although 
the specimen is not represented in the collection entrusted to me for description, I 
have included the fish as being the only representative of the Cyprinoids yet found 
in Tanganyika. ‘The specimen from which the drawing was made was of large size, 
and therefore could not be preserved under the difficult cireumstances to which 
allusion has been made in the introduction to this memoir, 
CHARACINIDS. 
31. ALESTES MACROLEPIDOTUS C. & V. 
Occurs in the Nile, the Senegal, the Niger, and the Congo. 
32. ALESTES MACROPHTHALMUS Gthr. 
This fish was known only from the Ogowe. 
33. HyprocyoN FORSKALI Cuv. 
Occurs in the Nile, the Senegal, and the Niger. 
CYPRINODONTID&. 
34. HAPLOCHILUS TANGANICANUS, sp.n. (Plate VI. fig. 3.) 
Body compressed, its depth 4 times in total length; length of head 44 times. 
Snout depressed ; lower jaw projecting boron the upper; eye a little longer than 
snout, a little shorter than interorbital width, 3 times in length of head. Dorsal 13, 
originating at equal distance from the head and the caudal fin; the first ray corresponds 
tothe 18th scale of the lateral line; posterior rays longest, $ length of head. Anal 28, 
ariginating below extremity of pectoral. Pectoral $ length of head, extending far 
beyond root of ventral. Caudal feebly emarginate. Caudal peduncle twice as long as 
yoL. xv.—Part 1. No. 4.—December, 1898. E 
