THE COPEPODA OF LIVERPOOL BAY. Dit 
It was natural to suppose that the animals might be 
found at a greater depth, after having left the surface, but 
such was apparently not the case, for while my tow-net 
swept the surface, Mr. McMillan used a deep sea tow-net 
of his own devising, allowing it to be drawn along while 
at the bottom, and occasionally to pass up through the 
intermediate depths. It is evident that we have yet much 
to learn as to the habits and distribution of these minute 
Crustaceans. 
In this connexion it may be important to notice the 
extreme abundance of Sagitta in the tow-nets throughout 
the year. 
Family. CALANID&. 
Pontella kroyert, Brady. 
One specimen, a fine male of this striking species, was 
taken off Puffin Island in August, 1888. With the 
exception of a few specimens which I found in the tow- 
nettings sent from Malta by Dr. Bruce (Proc. Biol. Soc., 
L’pool, vol. 11., p. 148), this species has been hitherto 
recorded only from Australasia and the Philippine Islands 
(Brady’s ‘‘ Challenger” Report on the Copepoda, p. 94). 
Family. HERSILIIDA. 
Giardella callianasse, Canu. 
This new species is fully described by M. E. Canu in 
“ Bulletin Scientifique,’’ series i1i., September, 1888, p. 410. 
The only specimen I have of it was taken by tow-net in 
Liverpool Bay, during the ‘‘ Despatch” expedition, 1886, 
and finding it to be something new, I waited for further 
specimens, in order to describe it fully. M. Canu has 
formed the new family Hersiliidw, including therein 
three genera: Hersilia, Phillipi, Gardella, Canu, and 
Hersiliodes, Canu. The genus Giardella comprises our 
