BY W. MACLEAY, F.L.S. 441 



Head with, obtuse knobs, and blunt ridges, the dorsal fin begins 

 over the orbit, the second spine the longest and nearly the length 

 of the head, the fifth shortest. [Dark brown, indistinctly marbled 

 and mottled with purple and white, with a few x^inkish marks 

 some bands of smaU white spots on the tail. 



King George's Sound, Port Jackson. 



304. Aploactis ScHOMBiriiGnii, Casteln. 



Aploactisoma Schoniburghii, Oastelnau, Proc. Zool. Soc. Vict., II., 



p, 64. 



Count Castelnau formed the genus Aploactisoma for this species 

 on account of its having teeth on the palatine bones, but it is 

 scarcely worth preserving. The species differs from A. Milesii 

 chiefly in the form of the dorsal fin, which is thus described by 

 Castelnau : '' The first dorsal is as high as the distance from the 

 snout to the centre of the eye ; it has five spines, the three first 

 much longer and thicker than the others and placed near one 

 another, the second longest ; the fourth is much shorter and more 

 remote, the fifth the smallest : there are thirteen spines and 

 fifteen rays in all. Coloration much as in Milesii, with a black 

 spot at the posterior angle of the soft dorsal, and a black border 

 to the caudal and anal fins. 



South. Australia." 



A Fish has been described by Bleeker under the name of 

 Paraploactes trachyderma which perhaps ought to come in here as 

 it is said to be Australian, but I have no knowledge of it or its 

 description. 



Genus Synancidium, MiiU. 

 Head irregularly formed, large ; scales none ; body and some- 

 times head and fins with skinny flaps. Dorsal fin with thirteen 

 spines ; anal with five rays. Yilliform teeth in the jaws and on 



