of the Fishery Board for Scotland. 
337 
MOLLUSCA. 
Pisidium pusillum (Jurine). Frequent. 
Limnsea truncatutd (Miiller). Frequent. 
CRUSTACEA. 
OSTRACODA. 
Cypria ophthalmica (Jurine). Frequent. 
Cyclocypris globosa (G. O. Sars). Rare. 
Erpetocypris tumefacta (Brady and Robertson). Frequent. 
Cypridopsis villosa (Jurine). Not common. 
Candona Candida (O. F. Miiller). Frequent. 
„ rostrata, Brady and Norman. Not very common. 
„ kingsleii, Brady and Robertson. Not very common. 
3. The Coulter Burn from Craigquarter Wood to the Hatching 
House. 
Part of the course of the burn in this section is alongside the Kilsyth 
Road, so that its banks presented conditions even less favourable to the 
existence of aquatic organisms than in the previous section. The burn 
itself was also unproductive of anything noteworthy. The species observed 
and identified in this section were — 
MOLLUSCA. 
Pisidium pusillum (Gmelin). Few. 
Limnoea peregra (Miiller). Few. 
CRUSTACEA. 
OSTRACODA. 
Cypria ophthalmica (Jurine). Few. 
,, serena (Koch). Not very common. 
Cyclocypris globosa (Gr. O. Sars). Few. 
Erpetocypris strigata (0. F. Miiller). Not common. 
„ tumefacta (Brady and Robertson). Not common. 
Cypridopsis villosa (Jurine). Not common. 
Candona Candida (Miiller). Frequent. 
„ Mngsleii, Brady and Robertson. Few. 
4. The Coulter Burn prom the Hatching House to"the 
Ponds at Howietoun. 
This section included the examination of the bum from the Hatching 
House to the ponds at Howietoun and a few of the ponds. In describing 
our examination of Loch Coulter, reference was made to the immense 
number of Entomostraca in the water there, and the question of what be- 
came of these organisms suggested itself as one of the first points requiring 
consideration. An explanation, that seemed a fairly reasonable one, was 
that a great many of them would be carried down the burn with the 
overflow water, especially when during wet weather a larger quantity of 
water than usual passed down the burn. At the time we visited the 
y 
