FISHES. MCCULLOCH. 101 



space between it and the first gill-opening. Spiracle large, 

 situated behind the end of the orbit, and about half a diameter 

 above it. Gill-openings sub-equal, uniformly spaced, their 

 width less than half the orbital length. 



Upper teeth a little smaller than the lower, with pointed 

 cusps arising from broad bases ; they are nearly all upright, 

 becoming slightly oblique laterally. The lower teeth differ 

 in the two sexes : in the male they are very similar to those 

 of the upper jaw, though somewhat broader, and a little 

 more oblique laterally ; in the female their cutting edges 

 are almost horizontal with the tips turned slightly upwards. 

 Scales with four spines, one of which is broad and leaf-like ; 

 they stand on stellate bases and have slender peduncles. 



Pectorals rounded, the inner angles not produced, and 

 not reaching the verticle of the origin of the dorsal. Dorsal 

 spines strong, anteriorly compressed, with broad shallow 

 grooves ; the position of the first varies from midway between 

 the end of the snout and the base of the tail to a point much 

 nearer the former. Soft portion of the first dorsal low, the 

 hinder angle produced backwards. Second dorsal much 

 higher than the first and but little shorter than it, the hinder 

 angle reaching beyond the commencement of the subcaudal 

 lobe ; the spine is long and curved in some specimens, short 

 in others. Outer angle of ventral rounded, the posterior 

 pointed and reaching beyond the verticle of the second 

 dorsal spine in females, and farther in males. Caudal broad, 

 the sub-caudal lobe well developed, and separated from the 

 terminal lobe by a notch. 



Colour. — Grey above, somewhat lighter beneath. The 

 anterior portions of the dorsals and pectorals are somewhat 

 darker in the smallest specimen. 



Described from two male and three female specimens, 

 683-1138 mm. long. They vary somewhat in their propor- 

 tions and the relative lengths and positions of their fins, 

 while the different form of the teeth in the two sexes is very 

 striking. There seems to be no reason, however, to suppose 

 that they represent more than one species. The figures are 

 prepared from the smallest specimen, which is a well pre- 

 served, young male, and which is selected as the type. 



Locs.— Great Australian Bight, Long. 128°-129'' E., 200- 

 300 fathoms. 



Edge of bank between Gabo Island and Cape Everard, 

 Victoria, 150-250 fathoms. 



