686 Mr. J. R. Norman on new 
Head nearly black, a broad metallic-silver collar on upper 
surface of neck. Body minutely variegated with dark grey 
on silver, equally variegated beneath, but brighter and more 
yellowish in tone; end of tail silver, terminal spine darker. 
The whole body has a metallic lustre, and the under surface 
somewhat resembles certain biotite or hornblende granites 
when polished. 
Total length 395 mm. 
This species is described from a single adult, collected by 
Mr. Loveridge near Kilosa, Tanganyika Territory. The 
specimen was dispatched to Mr. Crowther, of Dulwich 
College, alive, but died upon the way after having shed its 
skin. It is now preserved in the collection of the British 
Museum. 
Its name—excentricus—refers to its general appearance, 
which is odd in the extreme. 
LXXXIX.—Four new Fishes from Tanganyika Territory. 
By J. R. Norman. 
(Published by permission of the Trustees of the British Museum.) 
THE fishes described below form part of a collection from 
Mpanganye, Rufigi River, Tanganyika Territory, received 
from Mr. A. Loveridge. 
Distichodus rufigiensis, sp. . 
Depth of body 23 to 23 in length, length of head 44 to 44. 
Head as long as deep, about twice as long as broad. Snout 
not compressed, projecting beyond mouth, its length 1 to 14 
times diameter of eye, which is 33 to 4 in length of head and 
14 to 2 in interorbital width. Maxillary extending to below 
nostril; teeth in 2 series in both jaws, 20-25 in outer series 
of upper jaw. 15 gill-rakers on lower part of anterior arch. 
Dorsal 19-20 (4 unbranched), equally distant from occiput 
and caudal, or a little nearer latter; longest rays distinctly 
longer than head. Adipose fin moderately large, separated 
from rayed dorsal by a space equal to 2 the base of the latter. 
Anal 14-15 (3 unbranched) ; base 2 base of dorsal. Pectoral 
i to length of head, shorter than pelvics. Caudal forked, 
upper lobe pointed and slightly longer than lower, which is 
