256 
Tetrabranchus microphthalmus Bleeker, Nat. Tijdschr. N. Ind. 
II, p. 69. (Young). 
Symbranchus immaculatus Bleeker: Nat. Tijdschr. N. Ind. III, 
p. 32 (Young). 
Symbranchus immaculatus Bleeker, Muraenoïden en Symbran- 
choïden p..57. (Young). 
Noona Cuchia Beng. 
Adult. (27 inches in length). General colour of the erown 
of the head and back above the lateral line greenish- or brow- 
nish-olive, becoming paler, vellowish below the lateral line; 
throat pale yellow ochre. The general colour is produced by 
the pale yellowish groundcolour being minutely dotted with 
lilac and with numerous small, rounded or irregular brow- 
nish spots. The fins of the general colour, changing to black 
towards the caudal, with reddish yellow margins, becoming 
red towards the caudal. — Iris of the general colour of the 
body, but paler; pupil circular , iridescent black. 
Young. (6 to Í0 inches in length). Uniformly blackish- 
brown, with purple reflections, becoming paler on the throat 
and abdomen; fins black with whitish margins. 
Boel, D0. Gives nds: Orrors 7. And: 
Habitat. Estuaries of the Ganges. 
Bandjermasin, rivers of south east coast of Borneo 
(Brrecen). 
The general appearance of the fish somewhat resembles that 
of Monopterus gavanensts. The form is eylindrical, slightly and 
gradually tapering from the oeciput, where the diameter is grea- 
test, towards the origin of {he dorsal fin. From thence the 
sides are greatly compressed, and the form of the tail is broad 
lanceolate. The head is conical, the profile sloping and slight- 
ly convex from the occiput to the eyes, between which there 
is a shallow depression. From thence the profile again gent- 
ly slopes towards the muzzle. The latter is blunt, with a slight 
excavation in the centre, produced by a small eonical eminence 
on each side, through which the anterior nasal apertures 
