A NEW TRIBE 389 
are infero-lateral in position, with a strong spinigerous 
peduncle and two spinigerous branches. 
The type-species is Phreatoicus typicus, Chilton, 1882, 
from a pump at Eyreton in New Zealand. In this species 
the eyes are not visible, the second joint in the limbs of 
the perzeon is very slightly expanded, and in the seventh 
pair is shorter than the following joint. The pleon is 
remarkable for the great length of the fifth segment, a 
character not met with elsewhere either in the [sopoda or 
Amphipoda, though it is a distinguishing feature of the 
Cumacea. In regard to colour the animal is described as 
transparent. 
Phreatoicus australis, Chilton, 1891, was obtained by 
Mr. R. Helms from Mount Kosciusko in Australia. The 
specimens were taken, he says, at a place ‘locally known 
as ‘“ Piper’s Creek,” at en elevation of 5,700 feet or 
perhaps rather more, on the track from ‘“ Pretty Point” 
towards the “‘Ram’s Head.” The creek (or at least a 
branch of it) runs here through a, in damp weather, 
boggy flat, and at the time (early in March 1889) 
was slowly trickling along forming puddles here and 
there. In one of these puddles where there was only a 
little water covering the black bog mud, perhaps from two 
to three inches, | made the find. In turning the stones 
(flat pieces such as frost will split from rocks—not 
boulders) I found no ditficulty in picking the animals off, 
the most of them keeping quiet. ‘They were pretty 
numerous under the stones, when at all, and looked 
exceedingly lke the surrounding earth. Through this 
and their quiet habit I did not notice at first that they 
were so numerous, but seeing that they were interesting 
things (I had not seen anything like it before) I took 
pretty well all I could lay hands on; and this is the only 
time and place I have collected them although I have 
many a time turned stones in the neighbourhood and in 
similar localities.” Mr. Chilton supplies the not unin- 
teresting detail that ‘on March 13th at ‘“ Pretty Point ” 
Mr. Helms found the remains of his tea completely frozen 
in his billy.’ This new species is distinguished from the 
