134 
RECORDS OP THE AUSTRALIAN MUSEUM. 
The tuberculous ridges are extremely well-marked and are dis- 
posed as follows : — The median dorsal ridge commences between 
the eyes and extends along the edge of the first dorsal fin, thence 
recommences and similarly passes along the second dorsal ; it 
once more re-appears and forms the keel of the tail. 
On each side of this median ridge and about an inch and a half 
below it, runs a second ridge which loses itself behind the second 
dorsal fin, but faintly re-appears on the tail. Another ridge 
arises above the pectoral, passes along the middle line of the side, 
and is also traceable along the tail. A fourth ridge commences 
at the side of the vent and is lost beyond the anal fin. On the 
median ventral line immediately behind the vent, is another ridge 
which passes up the edge of the anal fin ; lastly, a ridge leads up 
to each ventral. 
The spots on the tail form regular longitudinal series, one row 
between each ridge. 
The stomach was crowded with a Mollusc, which Mr. C. Hedley 
recognises as a Natica. No trace of the shell was to be seen, but 
in every case the operculum was present. An examination of the 
contents of the intestines showed that the operculum is dissolved 
in its passage, and not ejected from the mouth. 
The Natica is found on muddy and sandy fiats, and the shark 
passing over such banks must pick up the mollusc by thousands. 
It evidently crushes the shell, sucks out the animal, and swallows 
it with the operculum attached. Neither the stomach nor intestines 
contained any food whatever beyond this particular Gasteropod. 
Day remarks* : — “ The favourite food of this fish is Molluscs and 
Crustacea*” 
Although not previously recorded from the Colony, this is the 
second example known to have been obtained here. On February 
14th, 1896, we purchased from a fisherman a specimen caught off 
Port Jackson. 
Hitherto the genus was known in Australian waters only from 
an example obtained by Mr. Alex. Morton, at Cape York, Queens- 
land. This specimen is also in the Museum collection. 
EDGAR R. WAITE. 
II.— A SHIPWORM, NEW to AUSTRALIA. 
Some specimens of “Cobra,” received from Captain Almond, Port- 
master, Brisbane, prove to be the Kuphus mannii , Wright. 
This species seems not to have been noticed since 1866, when it 
was described from Singapore, In the same parcel of specimens, 
which were procured at Cooktown, were included instances of 
G alobates thoracitcs , Gould. q HEDLEY 
* Day — Fishes of India, p. 725. 
