gillaroo. 
242 
fin two incfies and a half, rising higher at the back, and 
deeper at the belly than the kindred species, compared with 
which also the under jaw is shorter and more feeble the 
.nout more obtusely rounded, the setting on of the Pectoral 
fins thrust more forward under the plate which holders the 
gills, and which is turned up to give them place; the pectorals 
Ld ventrals also proportionally longer; the anal rather smaller; 
the tail less expansive. As regards colour, it is probable that 
the Gillaroo is as much liable to variation as the Common 
Trout; but the specimens under notice nearly resembled each 
other On the head brown, bluish brown along the back; 
hiRher portion of the sides tinted with pink, verging into 
yellow, and on the belly white. Cheeks yellow, as are t e 
pectoral, anal, and ventral fins; the dorsal dusky, with b ack 
spots and pale anterior border; adipose fin dark, mth a black 
spot, but without a red border, as in the Common Trout. Mr 
Thompson mentions some bright red spots on this fin, but 
says nothing of a red border or a diffused redness Vermilion 
spots are scattered over the sides, with no particular reference 
to the lateral line; there are also numerous dark spots on the 
cheeks and along the back, but none of these spots are 
encircled within a light border, as usual in the Tiout. i 
teeth strong on the tongue; the palatine teeth wide at the 
base and pointed, those on the vomer irregular; a narrow 
yeil’in front of the palate. The flesh a rich salmon-colour. 
On attempting to preserve the skin it was found to be softer 
than in the Trout, and to stretch more readily ; but this might 
arise from the length of the journey before it came into my 
possession. 
