BY W. MACLEAY, F.L.S. 335 



Back without, abdomen with a crest. Spines : one above the 

 middle of the orbit, nearly erect, pointing upwards and outward ; 

 two on each side of the back ; one in the middle of the side ; two 

 on each side of the abdomen, the foremost being well developed, 

 and situated immediately behind the root of the pectoral fin. 

 Snout in adults with a more or less developed hump. Head and 

 body with numerous alternate brown and yellow longitudinal 

 stripes ; the brown are broader than the yellow, there are about 

 seven on each side of the head. The stripes on the body are 

 sometimes broken up into small spots. 



Tasmania, South Australia. Length five inches. 



1038. Ostraciox lexticularis, Richards. 



Proc. Zool. Soc. ; 1841, p. 21.— Guntli., Cat. Fishes, VIII., p. 268. 



Carapace much compressed, back and abdomen compressed into 

 a crest ; no spines, sometimes the centre of each scute slightly 

 raised. Colour pink with yellow tints, on the sides and back 

 some spots of an ochreous yellow, having the centre darker ; 

 lower parts of the body and mouth of a rose colour, becoming 

 darker towards their extremities. Length twelve inches. 



Port Jackson, South Australia. 



1039. Ostraciox AMiEXUS, Castelu. 



Avacana amana, Casteln. Proc. Zool. Soc. Victoria, Vol. L, p. 207. 



Carapace with five ridges, the abdomen forming an inferior 

 one ; spines short, thick, conical, blunt, not arched, placed one 

 above the orbit, pointing outwards; two on each side of the 

 back, pointing backwards ; beneath these are others still shorter 

 and which are merely white striated tubercles, these are placed, 

 one on each side towards the middle, and three on a line at the 

 beginning of the belly, — one is under and a little behind the 

 root of the pectoral fin, the other two close together and more 

 behind. The entire carapace is rough and covered with small 



