122 
“ Mediterranean ; open seas between or near tlie 
tropics.” 
The Sword Pish {Sistiophorus Oladius) is stated to occur at 
Port Jackson, hut has not, to my knowledge, been seen in the 
southern seas of Australia. 
GOBIID^. 
“ Body elongate, low, naked, or scaly. Teeth 
generally small, sometimes with canines. The in- 
fraorbital ring does not articulate with the prseoper- 
culum. The two dorsal fins separated, or more or 
less united, the spinous portion being always the 
less developed, and composed of flexible spines; the 
anal similarly developed as the soft dorsal ; ventrals 
with one spine and five rays ; sometimes both ven- 
trals united into a disk. Gill-opening more or less 
narrow, the gill -membranes being attached to the 
isthmus ; four gills ; pseudobranchiae. A. promi- 
nent papilla near the vent. Air-bladder generally 
absent. Pyloric appendages. 
“ Carnivorous fishes, living at the bottom of the 
shores and of the fresh waters of the temperate and 
tropical regions. This family offers nmnerous in- 
stances of the fact that a part of the individuals of 
one and the same are entirely confined to fresh 
waters, whilst others live in the sea.” 
The principal genus of this group is Oobius, formed by Artedi ; 
it comprises numerous species, generally of small size, and 
inhabiting all the temperate and tropical seas of the world. 
