54 Proceedings of the Royal Physical Society. 
Ostracoda obtained in pools at Lurrness LINKS, near 
Aberlady. These pools have been long known to the 
botanist if not to the zoologist, and there can be no doubt 
that they harbour a micro-fauna fully as interesting as 
their flora. The following species were collected in Septem- 
ber 1889 :— 
Cypria ophthalinica (Jurine). Notodromas monacha (O. F. Miller). 
Cypria levis (O. F. Miller). Candona candida (O. F. Miller). 
Cypris fuscata (Jurine). _ Candona pubescens (Koch). 
Cypris virens (J urine). ' Candona kingsleti, Brady and Robert- 
Erpetocypris reptans (Baird). son. 
Erpetocypris twmefacta (Brady and Candona fabeformis (Fischer). 
Robertson). Ilyocypris gibba (Ramdohr), 
Cypridopsis villosa (Jurine). 
THREIPMUIR RESERVOIR, two to three miles south of 
Balerno, is formed in one of the valleys of the Pentlands; 
the surrounding scenery has a rather bleak and barren 
appearance, especially towards the Pentlands. The reservoir 
is of considerable extent, and to make a careful examination 
of it would require the use of a boat, so that a tow-net and 
dredge could be used. If that were done it is quite 
possible that some interesting Entomostraca might be 
captured. I have only been able to make an examination 
of the sides of the reserveir with a hand-net, and the follow- 
ing were the Ostracoda obtained :— 
Cypria ophthalmica (Jurine). Candona candida (O. F. Miller). 
Cypria serena (Koch). Candona kingsleii, Brady and Robert- 
Coyris fuscata (Jurine), son. " 
Erpetocypris twmefacta (Brady and Candona acuminata (Fischer). 
Robertson). Candona sp. 
Cypridopsis vidua (O. F. Miller). 
It sometimes happens that the ditches by which the 
surface water drains off into a loch or pond harbours a 
richer micro-fauna than the loch or pond to which they 
are tributaries. This was my experience at HARELAW 
Dam, which was visited about the same time as Threipmuir. 
The dam itself yielded very little in the way of Ostracoda, 
but in a ditch that for a considerable distance runs parallel 
