APPENDIX. 485 



parts of the dorsal and anal. Immediately behind the gill 

 openings there are three roundish scales larger than the others. 

 The scales of the cheeks are studded with points, which are 

 more minute and rounded than the others, and there are no 

 smooth intervening lines, such as exist on the cheeks of some 

 other species. The dorsal spine is rather short, thickish, and 

 not acute. It is strongly roughened by five or six rows of 

 short bluntish and truncated teeth. The soft dorsal and anal 

 commence with a simple flexible ray which is not jointed. 

 The other rays have each from four to six rough points near 

 their bases. The rays of the caudal are alternate. The ventral 

 spine is short and blunt, and is armed with short divaricated 

 teeth, some of which are forked. The roughness runs forward 

 on the chine or ventral line, until it passes gradually into the 

 ordinary scales of the head. The dewlap is very slightly ex- 

 tensible, and but little developed. It is supported by six 

 thread-like rays, which are all divided to the base. 



A black band crosses the forehead from eye to eye. The 

 upper half of the eye is bordered with black. The first 

 dorsal exclusive of its last ray is of the same hue ; a black 

 band descends from it, and two from the second dorsal, which 

 meet in a stripe that extends from the eye to the tail, the whole 

 bearing some resemblance to the traces of a coach-horse. 

 There is also a black mark on the upper surface of the tail, 

 and a minute brownish speck on each scale, which specks form 

 very faint rows on the cheeks and belly. The ground tint is 

 pale or whitish, with some duskiness on the face, as if it had 

 been coloured when recent. Length, 2^ inches. Height of 

 body, 1-^ inch. 



Habitat. — The western coasts of Australia. 



