88 ACANTHOPTERYGII. — TRIGLAD^. 
rals, which resemble wings ; and are on their 
inner or posterior surface of a fine deep blue 
colour, becoming scarlet near the last ray. All 
the other fins are tinged with scarlet, more or 
less distinctly ; the caudal and the first dorsal 
brilliantly. The two dorsals are set in a groove, 
bounded by two rows of strong and sharp points 
pointing backwards ; this furrow does not extend 
beyond the range of the two fins either in front 
or behind. The bony armour which encases the 
head, carries several spines ; the front part of the ; 
orbit of each eye is armed with three small ones ; 
the crown plate ends in a strong broad one on |i 
each side ; the gill-cover, and the fore-gill-cover ‘ 
each carry one, and there is another stout and 
strong one pointing backwards, affixed to the 
