203 
STiaMATAPHOBA BOOPS. 
Amongst the specimens of the Nigra I observe several similar 
to the others, but with enormous globular eyes ; these are very 
prominent. I could not, up to the present, ascertain if they form 
a particular species. 
Order VI. PLECTOGNATHI. 
“Teleosteous fishes with rough scales, or with 
ossifications of the cutis in the form of scutes or 
spines; skin sometimes entirely naked. Skeleton 
incompletely ossified, with the vertebrae in small 
number. Gills pectinate ; a narrow gill-open- 
ing in front of the pectoral fins. Mouth narrow; 
the hones of the upper jaw generally firmly united. 
A soft dorsal fin, belonging to the caudal portion of 
the vertical column, opposite to the anal; some- 
times elements of a spinous dorsal besides. Ventral 
fins none, or reduced to spines. Air-bladder without 
pneumatic duct. I^early all are marine fishes.” 
SCLERODEEMI. 
“ Snout somewhat produced ; jaws armed with 
distinct teeth in small number ; skin with scutes 
or rough. The elements of a spinous dorsal and 
ventral fins generally present. Marine fishes of 
the temperate or tropical regions,” 
MONACANTHUS. 
These fish being almost all confined to the tropical seas of the 
world it is remarkable to find that a considerable number of sorts 
have been observed in the most southern parts of Australia, but 
they only appear in the Straits of Bass in the warm months of the 
