Arruur.—On the Brown Trout introduced into Otago. 487 
The Pomahaka River is a very large tributary of the Clutha River, rising 
in the snowy ranges of the Umbrella Mountains and flowing in a south- 
easterly direction. It is, therefore, without the trap region, unless towards 
its mouth, and is partly snow-fed during the summer, besides being 
frequently muddy from the gold-mining operations on its upper waters. 
Possessing numerous gravelly reaches it is a good breeding water, but it is 
a late river, and its fish take a long time to get up in condition in the 
summer. Occasionally the trout in it are of good quality, but as a rule 
they are not to be compared in that respect with those of the Waiwera or 
Waipahi. In colour they are light and silvery. Night fishing with minnow 
is very successful, but any lure may be used during the day. The stomachs 
of those trout which I have opened I found contained larve, creepers, 
beetles, whelks, minnows, crayfish, and small stones, but the whitebait are 
very plentiful also in this river. There are quite a number of records of 
fishing in my possession, but one may suffice to mention, that of Mr. 
Elliott. During the summer and autumn of 1882-83 he had three blank 
days, 28 good days, and caught 135 trout, weiging 2364 lbs., or 5:2 trout 
daily of an average weight of 1°75lbs. The largest trout that I know of 
was 71bs. and caught by an angler in 1882, but one of 64 1lbs., taken in 
1879, gives a yearly rate of growth of 1:08 lbs., which is probably as much 
as can be expected in the Pomahaka. 
Of the interior streams and lakes where fish have been taken the 
Waitahuna, Teviot, Manuherikia, Butel’s Creek, Lochy, and Wakatipu 
Lake, also the Oreti River merit a little notice. 
The Waitahuna can only be fished in its upper parts owing to pollutions 
from gold-mining. It flows from the Lammerlaw Mountains behind the 
town of Lawrence over a slate and gneiss formation in a south-east and then 
a south-west direction till it joins the Clutha. It has good spawning beds, 
trout are numerous but not large, rather poor in condition, but take fly 
readily, and are good eating. The result of two half days in November, 
1881, when I fished it, the water being in splendid order, was 15 trout, 
weighing 8% lbs. gross, no trout being over a pound or so. This is a fair 
sample of its fishing capabilities, but the largest fish taken was one of 43lbs. 
by Mr. Coghill in October, 1879, and I have heard of other large ones being 
seen. As trout were first put into the Waitahuna in 1875, the yearly 
growth of Mr. Coghill’s fish would be 1:121bs. Stomachs opened by me 
showed flies, shellfish, larve, creepers, crayfish, and small stones as their 
contents. In colour these trout are silvery. 
The Teviot River is a small tributary of the Clutha River which rises in 
the Lammerlaw Mountains and after flowing in a westerly course through 
rocky gorges joins the Clutha at Roxburgh. Its rocky bed is formed of 
