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STIOMATAPHORA BOOBS, 



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 bones 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. Nearly all are marine fishes." 



SCLEBQDERMI. 



" 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." 



MONACANTHTJS. 



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 



