CuiLTON.—Some New Zealand Amphipoda. 215 
Paraleptamphopus subterraneus (Chilton). 
Par ERE ы subterraneus Stebbing, 1906, p. 294; Chilton, 
, p. 54 (with synonyms). 
This species is very widely distributed in New Zealand. It was first 
obtained in wells at Eyreton not far from the River Waimakariri; it 
has since been found in wells in Christchurch, Lincoln, Leeston, Ashburton, 
and Winchester. Later on I collected it in surface streams issuing from 
vede near the River Porter, a tributary of the Waimakariri, and 
in streams and ditches near Drummond and Otautau, 
Southland, where it is found associated with Р. caeruleus, as already 
mentioned. Messrs. Lucas and Hodgkin took it in Lake Wakatipu, and 
in 1908 I found it in a small stream at Duck Cove, Doubtful Sound, in 
places where the stream was almost covered and shut out from the light 
by the overhanging rocks and trees. In the North Island it was taken 
АП these гур are pale and colourless, with eyes im mperfect or 
is no beue in considering Mure as EC belonging to the same species, 
T. Ha i i 
914, however, Hall sent me specimens which he had 
collected at “Clippings,” on the range of mountains known as the 
Remarkables, near Lake Wakatipu, and from Mount Dick, in the same 
j above sea-level hese specimens were rather aue in = y 
than the forms obtained from wells, the third uropods were sh and 
similar to those of P. caeruleus, and they showed the dark- blue eins 
characteristic of the latter species, though it was not quite so intense, 
and some of the specimens were much lighter than others; the telson, 
too, proved to differ distinctly io "scel of the type. At first I was 
inclined to consider them as a new species, but a careful comparison of 
the forms of P. subterraneus from the different localities mentioned has 
shown that numerous transitional forms exist as regards the individual 
ae ae for the others. Though largely intermediate between the two 
species, the “Clippings” and Mount Dick specimens approach more 
nearly to P. subterraneus in the telson, and I therefore look upon them 
as a variety of that species. 
The structure of P. subterraneus was somewhat fully dealt with by 
me in 1894 so far as the — forms were concerned. 16 will 
specimen from Eketahuna, fig. urp? being one of the pair seen from above, 
fig. urp** the other from the side; the branches are not much longer than 
the base, on the latter there is ‘usually a small tuft of setules at the 
upper distal angle, and two or three separately placed on each upper 
margin. In specimens from Southland streams the tuft at the distal 
