of the Pishery Board for Scotland. 283 
last century Dutch busses frequented the loch of Strathbeg.” At present 
the sea is said to flow into it only during high-water of spring tides 
through a sort of canal-like outlet, and the water is thus rendered some- 
what brackish. The loch is moderately deep in some parts, but at the 
time of our visit it was so shallow in some places at the north-east end 
that it was necessary to propel the boat we were using by punting it. 
It is also stated in the Old Statistical Account that an effort was once 
made to drain the loch, but from some cause the attempt failed. It 
contains perch and sea-trout but is little fished. The loch was partially 
examined early in September last year (1890), while the ‘Garland’ was 
windbound in Fraserburgh Harbour. Entomustraca were very abundant 
—Ceriodaphnia reticulata and Cypridopsis aculeata being very common 
species. The bottom of the part examined consisted very much of 
blackish mud, having its surface covered in some places by a rust-coloured 
deposit. Considerable portions of the bottom were overgrown by a 
luxuriant crop of Chara. Ihave no doubt that a careful examination of 
the invertebrate fauna of this loch would yield interesting results. The 
following are the organisms obtained during our visit in September :— 
MOLLUSCA. 
Pisidiwm pusillum (Gmelin). Frequent. 
Planorbis spirorbis (Miller). Rather rare. 
Limnea peregra (Miller). Common. 
5, truncatula (Miller). Rather rare. 
CRUSTACEA. 
CoPpEPoDA. 
Cyclops strenuus, Fischer. Frequent. 
,, tenwicornis, Claus. Not common. 
», viridis, Jurine. Frequent. 
,, serrulatus, Fischer. Frequent, especially round the margin. 
,, erassicornis, O. F. Miller. Frequent round the margin. 
Canthocamptus, sp. Rather rare round the margin. 
OSTRACODA. 
Cypria serena (Koch). Common. 
», levis (O. F. Miiller). 
», ophthalmica (Jurine). Frequent. 
Erpetocypris reptans (Baird). Frequent. 
Cypridopsis vidua (Miiller). Frequent. 
F villosa (Jurine). Frequent. 
os aculeata (Lilljeborg). Very common. 
Candona candida (Miller), Frequent. 
Ilyocypris gibba (Ramdohr). Not common. 
Limnicythere inopinata (Baird). Frequent. 
CLADOCERA. 
Ceriodaphnia reticulata (Jurine). Very common. 
Simocephalus vetulus (Miller). Frequent. 
Daphnia pulex (Linné). 
»,  longispina, Miller. Frequent. 
Eurycercus lamellatus (Miller). Not very common. 
Pleuroxus trigonellus (Miller). Not very common. 
6. LocH ACHNACLOICH. 
Loch Achnacloich, four or five miles north of Invergordon, Ross-shire, 
is of small size, and easy of access. It was visited one day towards the 
