formed at Port Arthur . 
61 
3. Aplodactylus arctidens. Aplo. dentibus oris tri - 
cuspidatis , superiorities in serie octuplici , inferioribus 
in serie quintuplici dispositis ; ccecis pylori quatuor 
Radii: —Br. 6—6; P. 9 et 6 ; V. 1,5; D. 16 — 1,17; A. 3 8 • 
C. 163. 
This species differs from A. punctatus of the Chilian 
seas (the only species previously known) in its dentition, 
but resembles it so much in external form, colours, and 
markings, as well as in anatomical structure, that it 
cannot be placed in a separate genus. In the Histoire 
des Poissons , the teeth of dentatus are described as 
follows : “ Les dents sont disposees sur trois rangees ci la 
mdchoire suptrieure, et sur deux d Vinftricure: clles sont 
aplaties , et out leur bords arrondis el denteles en petits 
festons; clles so7it tres-sembtables a celles des crenidens , 
on en compte quatorze de chaque cote a la mdchoire su - 
perieure , et treize a Vinferieure . Derriire ces rangees 
anterieures ily a des petites dents grenues sur une bande 
etroite d chaque mdchoire In the Van Diemen’s Land 
fish, the teeth stand in eight or nine crowded ranks in 
the upper jaw, and in five or six in the lower one ; those 
of the interior rows being very much smaller in all their 
dimensions, but otherwise shaped exactly like the teeth 
of the exterior rows, which resemble those of punctatus . 
Their points show three small lobes, the middle lobe 
being largest and most prominent. The species further 
differs from punctatus in having four caaca, but its food 
appears to be similar, the intestines having been found 
filled with large fragments of seaweed, apparently Ulva 
umbilicalis . 
4 & 5. Two new species of Gurnard were then men¬ 
tioned as the first of the genus that have been brought 
from the Australian coasts ; though one species ( Trigla 
kumu ) is known to inhabit the seas of New Zealand. 
