248 THE PROCEEDINGS OF THE LINNEAN SOCIETY 



This sort by its nasal organ, very conspicuous, composed of one 

 opening on each side, being a simple circular cavity, would enter 

 the late Bibron's genus Monotretus. 



Tetrodon staigeri. 



Rather large spines cover the body, except the snout, and 

 stopping just before the insertion of the dorsal fin, leaving all 

 the posterior part naked ; these spines are numerous, but rather 

 distant over from the other, and about one line long ; those of the 

 upper part of the body have three roots, and those of the belly 

 four ; the length of the orbit contained twice and a-half in the 

 interorbital space which is convex ; length of the caudal fin 

 equal to its distance to the posterior edge of the dorsal. The 

 upper part of the body is of a dark slatey colour, with rounded 

 black irregularly placed spots ; the lower part is white, a large 

 obscure spot at the base of the pectorals. 



The specimen is not four inches ; it comes from the Brisbane 

 River, where Mr. Staiger says it is called Toad Fish. 



This sort is very nearly allied to T. hispidus, and comes in the 

 same division, but is very distinct by its spines being much longer 

 and set considerably more apart. 



Description of a new species of Ianthcenas, from the 



Duke of York Islands. 

 By E. P. Ramsay, F. L. S., &c. &c. 



Ianthenas pallidiceps, sp. nov. 



Like I. metallicus, Temm., but having the whole of the head 

 and throat white. 



The whole of the head and throat white, with a faint opaline 

 rosy tint in certain lights ; the quills of the wings and tail, the 

 primary-coverts above, the under wing-coverts, outer series of 

 the under tail-coverts, slatey black; the neck, and all the upper 

 and under surface of the body, upper tail- and wing-coverts, 

 slatey black at the base but broadly margined at the tips of the 



