NEW OR INSUFFICIENTLY - DESCRIBED FISHES. 41 
one third more than the width of the mouth; interorbital fout- 
anelle deepest and widest anteriorly, its greatest width 235 in its 
length. Body smooth. 
Dorsal fin originating behind the tip of the ventrals, its vertical 
height 1*33 in its length, which equals the eye-diameter ; tail long 
and slender,* with a weil developed spine, but without folds ; outer 
border of ventral feebly rounded, its base 1*7 in its length. 
Spiracle wide and slightly oblique, outwardly extending forward 
to the postero-inferior angle of the orbit, the inner opening wider 
than the eye-diameter. Grill-openings narrow and subequal, the 
middle one 2*4 in the same. 
Upper surface and tail behind the spine purple, the pectoral 
fins shading outwards to olive-brown ; lower surfaces cream-color. 
Described from a young example obtained in Moreton Bay 
during January 1911 ; length of disk 152 millim., width 280. 
The nearest ally of this species is the North-eastern Atlantic 
M. aquila, from which it differs, as noticed by Dr. Griinther, in the 
much narrower median teeth, those of the upper jaw being rather 
less than 2, of the lower rather more than 25 times as wide as 
long. 
Xatned for Dr. Ronald Hamlyn Hamlyn-Harris, the Director 
of the Queensland Museum. 
CENTRISCXDiE. 
CENTRISCUS CRISTATUS (De Vis). 
Amphisile cristata De Vis, Proc. Linn. Soc. N. S. Wales, ix, 1885, p. 872: 
Noosa Beach, Q. 
SMOOTH- JOINTED .RAZOR FISH. 
D. lii, 12 ; A. 13 or 11 ; C. 10 ; P. 12 ; V. 3. Depth of body 
465 to 5-15, length of head 266 to 2'75, of snout 3 5 to 375, of 
terminal plate 2*6 in length of body to root of caudal fin. Length 
of first lateral plate 1*65 to 1*85, of first dorsal spine 2 to 215, 
height of soft dorsal 3*65, or! anal 6 35 to 6*6, of caudal 4*4 to 
455, of pectoral 315 to 3-4 in length of head. 
* The tail is unfortunately broken, the part still left being 2*2 times the length 
of the disk. 
