140 
in having the spiracle larger and almost circular, by the shagreen 
being not developed to the hinder margin of any of the fins. The 
dorsals and pectorals are dark grey, the posterior aspects excepted ; 
there is also an unclouded triangular space in the lower half of the 
first dorsal. The tip of the caudal and the concavity of its lower 
lobe are nearly black. (Plate XV). 
The stomachs of the adults contained an assortment of fishes of 
different species, chiefly those taken in the trawl at the same 
station, including Promethichthys prometheus and much - digested 
pleuronectids. 
The foregoing description is drawn up from an immature specimen, 
the adult which I had prepared and preserved having unfortunately 
been washed overboard during a storm, together with many other 
specimens, and some collecting-gear. 
There can be little doubt that the New Zealand Galeus has been 
correctly referred to G. australis, though what are the distinguishing 
characters of that species is not clear. Macleay wrote, “ This fish 
has generally been regarded as identical with Galeus canis, the ‘ tope’ 
of English fishermen. I think I am justified in separating them.” 
In the report for 1900, the “ tiger-shark (Lamna glauca)” 1s 
recorded as having been taken in the trawl on fifteen occasions, and 
in the 1901 report it is stated to have been thrice obtained. This 
is a very palpable error of identification, or, rather, naming; and it 
is almost certain that the shark trawled was Galeus australis, more 
especially as this species, not recorded, was taken so often during 
our cruise. In the latter report, unspecified “‘ sharks ”’ were netted 
at eight stations. I have no means of knowing what species may 
have been taken, but it is probable that all were examples of Galeus 
australis. 
The trivial names of this and other species have been adopted 
by early writers from British representatives, but these names are 
not necessarily in use. As, however, the differences between, say, 
Galeus and Mustelus are scarcely appreciated by the colonists, the 
book-names applied are here retained. 
Muste.us, Linck, 1790. 
Mustelus antarcticus Giinther. 
SMOOTH-HOUND. 
Plate XIV, fig. 2. 
Mustelus antarcticus Giinther, Cat. Fish. Brit. Mus., viii, 1870, p. 387. 
Galeus antarcticus Waite, Rec. Aust. Mus., iv, 1902, p. 175, fig. 19. 
Stations 2, 7-9, 12-24, 28, 29, 31, 34, 36, 37, 42-44, 47, 48, 50, 53, 
54, 57, 58, 61, 63, 71-78, 80, 81, 83-88, 94, 96. 
Length of head 6:1, of tail 5-0, in the total; width of head, 1-4; 
interorbital space, 2:2, and equal to the length of the snout; width 
