72 ICHTHYOLOGY 
Odax. Lineatus, Rich., Erebus and Terror, Fishes, p. 
133., pi. 60, fig. 1. 
. Gunther, Catal. iv., p. 242. 
The first spine of the dorsal is prolonged in a filament 
nearly as long as the spine. 
After having been a short time in liquor, the back is olive, 
and the lower parts orange ; a broad carmine band extends on 
all the length over the lateral line (except on the anterior curve, 
where it runs on it). The fins are yellow; the dorsal is 
covered with undulating longitudinal and rather obscure lines, 
and at the middle of its length it has on the part adjoining 
the back a long dark blue spot, lined externally with scarlet ; 
this spot extends from the eighth to the seventeenth spines ; 
the extremity of the long rhombic caudal is obscure, length 
six inches. 
ODAX RICHARDSONII. 
Gunther, Cat. iv., p. 241. 
Appears entirely similar to the Victorian specimens. 
Mr. Waterhouse says it is called mud-fish by the Adelaide 
fishermen. 
ODAX FRENATUS. 
Gunther, Cat. iv., p. 2, fig. 1. 
This seems to remain small. My largest specimen measures 
five inches. 
This sort has the same form of caudal as Radiatus, but it is 
easily distinguished by its upper parts being brown, and the 
lower yellowish; on each side and below the lateral line 
extends a rather broad longitudinal band. The fins are yellow, 
but the caudal rather obscure, as are sometimes the first rays 
of the dorsal. 
Dr. Gunther's specimens were from Swan Kiver. 
ODAX PUSILLUS. 
Height six and a half times in the total length ; head four and 
a quarter in the same ; eye contained three and a ihird times 
