of the Fishery Board for Scotland. 339 
Erpetocypris tumefacta (Brady and Robertson). A few in the burn 
and in the ponds. 
Cypridopsis vidua (O. F. Miiller). A few in one of the ponds. 
i villosa (Jurine). A few in the burn and in one of the 
ponds. 
Candona candida (Miller). Frequent in the burn and ponds. 
lactea, Baird. In one of the ponds, rather rare. 
acuminata (Fischer). In the burn and one of the ponds, 
rather rare. 
kingslewi, Brady and Robertson. In marshy ground by 
_ the side of the burn, not common. 
Aquatic Acari and Coleoptera, the larves of Coleoptera and Phryganeide, 
were also observed both in the burn and in the ponds. 
197 
9 
99 
2? 
5. THe Gou.ttTeR Burn FROM HowliETOUN To GOLDENHOOF. 
This section includes the Howietoun Ponds to Goldenhoof Dam as well 
as the dam itself. Between the ponds and Goldenhoof the burn is 
locally known by the name of the Stockbridge Burn. Very few organisms 
were observed in this part of the burn. It flows too rapidly to permit of 
anything, except perhaps insect larve or Ancylus, getting a foothold. 
There were, hcwever, a few marshy places by the side of the burn that 
yielded a number of Ostracoda, among which was Cypris reticulata—a 
species which, though generally distributed, is not very common. 
The dam is of comparatively small area; part of its margin is densely 
fringed with reeds and other aquatic plants, which afford shelter to 
numerous organisms. Among these Mollusca and various groups of 
Entomostraca were common, as well as Diatoms, Confervee, and the larvee 
of insects. The water is not very deep, the deepest part being scarcely 
over 6 feet; the bottom is formed of fine mud, evidently consisting very 
much of vegetable débris, for when it was disturbed bubbles of marsh- 
gas rose to the surface of the water. Trout were moderately common in 
the dam, and it was ascertained, by the examination of the stomachs of 
some of them, that they were feeding on insects and Hntomostraca, 
especially Ostracoda. The following are the species of Mollusca and 
Crustacea observed and identified in this section :— 
MOLLUSCA. 
Pisidium pusillum (Gmelin). Frequent in the dam. 
Planorbts spirorbis, Miiller. Frequent in the dam. 
Limnea peregra (Miiller). Frequent in the dam and burn. 
CRUSTACEA. 
DAPHNIADS. 
Eurycercus lamellatus (Miller). Not common in the dam. 
Chydorus sphzricus (Miller). Not common in the dam. 
Acroperus harpe, Baird. In the dam not common. 
CloPEPODA. 
Cyclops serrulatus, Fischer. Frequent in the dam. 
Canthocamptus minutus (Miller). Frequent in the dam. 
