212 
RECORDS OF IV. A. MUSEUM. 
head. Interorbital width equal to the depth of the caudal peduncle, 
3.83 in the head. Mandible 2, maxillary 2.87, highest dorsal ray 
1.53, and pectoral 1.53 in the head. 
Body elongate, subcyliudrical and slightly compressed. Head 
deeper than broad, pointed and flattened above. A thick, trans- 
parent membrane extends from the snout, over the eye to the 
preoperculum. Jaws subequal. Maxillary almost entirely exposed, 
only the upper edge slipping under the preorbital ; it reaches back 
almost to below the anterior orbital border, and though broad, is 
scarcely expanded posteriorly. Hinder margin of preoperculum 
sloping very obliquely backwards and downwards, the angle sharply 
rounded. The opercular margin forms an obtuse angle posteriorly. 
No teeth are visible, even under a lense, but the jaws and bones of 
the palate are a little rough to the touch. Gill openings large, the 
membranes free from the isthmus. 
Origin of dorsal almost midway between the tip of the snout 
and the vertical of the end of the anal. Ventrals Inserted behind 
the tip of the adpressed dorsal and somewhat nearer the hypural 
than the pectorals ; the first ray is more than one-third as long as its 
distance from the anal. Anal very small, its origin much nearer the 
hypural than the ventrals. Pectorals opening horizontally, the anterior 
rays as long as those of the dorsal ; their hinder borders are a little 
emarginate. 
Scales of moderate size, cycloid, and they appear to have fine 
longitudinal striations on their exposed surfaces. They are nearly 
all missing in my specimen, but there seem to have been eighteen 
on the back before the dorsal fin, and about fifty-six between the 
hinder margin of the head and the hypural. The bases of the 
dorsal and anal fins are enveloped in scaly sheaths, and the 
pectorals and ventrals each have a long flap composed of axillary 
scales. 
The colour appears to have been dark blue on the back, 
sharply separated from the silvery sides and belly. Tips of the 
jaws blackish. 
Described from a single specimen, 220 mm. long, from Albany. 
A few specimens of this species have been taken in Port Jackson, 
and it is recorded from South Australia by Zietz. 
