FISHES. — MCCULLOCH. 147 



Body covered with rather large ctenoid scales, which extend 

 forward onto the operculum and postorbital part of the pre- 

 operculum. Lateral line scales similar to those of the body, the 

 anterior three or four with strong spines, and the ten following 

 with very minute, almost prostrate spines. There are about 

 fifty-three or seventy-six rows of scales above the lateral line, 

 according to the direction in which they are counted. 



Origin of the first dorsal between the ends of the opercles. 

 The anterior spine is joined to the base of the second by a low 

 membrane, and the third is the highest. The second dorsal ray 

 is the highest, a little shorter or rather longer than the longest 

 spine; the following rays gradually decrease in length. Anal 

 commencing a little behind, and terminating well behind the 

 second dorsal ; its rays are shorter than those of that fin, and 

 gradually increase in height to the penultimate one. Caudal 

 rounded. Ventral reaching to, or a little beyond the oi'igin of 

 the anal, its spine very weak and the inner ray simple. Pectoral 

 broadly rounded, reaching to below the middle of the first dorsal 

 fin. 



Colour in formalin. — Greyish above with very indefinite traces 

 of darker cross-bands ; head and back finely speckled with brown 

 dots. Spines and rays of the dorsal fins with small brown dots. 

 Anal whitish, posterior rays with dark spots. Pectorals and 

 ventrals spotted. Caudal dttsky, with large blackish brown 

 spots. 



I have much pleasure in associating with this new species, the 

 name of my friend Dr. R. Hamlyn-Harris, Director of the 

 Queensland Museum, to whom I am indebted for much valuable 

 assistance when working at the collections under his charge. 



This species may be 1. bataviensis, Bleeker 1 , but appears to 

 differ in having only fifty-three instead of sixty scales on the 

 lateral line, and two preopercular spines instead of three. It is 

 also very similar to I, isacanthus, Cuvier & Valenciennes 2 , 

 which likewise has sixty scales and a somewhat smaller eye. 



Locs. — Described from two specimens, 183-204 mm. long, of 

 which one is from near Pine Peak, Queensland, and the other 

 from Moreton Bay. Five others are in the collection Avhich were 

 trawled off Bo wen in about 16 fathoms. 



1 Bleeker— Nat. Tidschr. Ned. I'ud., iv., 1853, p. 460, and Atl. Iehth., 

 ix , 1877, pi. ccccxx., tig. 4, 4a. 



2. Cuvier & Valenoieunes — Hist. Nat. IViss , iv., 1829, p. 216. Id. 

 Sauvage, Bull. Nouv. Arch. Mus. Paris, ix., 1873, p. 55, pi. vii., fig. 1, la. 



