RIVER LAMPREY 
of a little pit hollowed out of the bed of the river. 
Both sexes help in its construction, and by the aid of 
their suckers these industrious builders fasten upon 
and remove stones both up and down stream. When 
the female has deposited her eggs in the nest, they 
are covered with a sticky secretion which fastens them 
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River Lamprey Fig an 
‘together, and in addition, stones are removed from 
above the receptacle so that sand is carried by the flow 
of the water towards the abode, and some of this settles 
upon and helps to more securely cover the eggs, the 
lower part having been banked up with stones previously 
removed. After the young have passed through their 
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Planer’s Lamprey Fig 2 ee 
various stages, some descend to the sea, but in some 
rivers, and in my favourite Scottish Loch, Loch Lomond, 
many never leave its precious shores. I could wish that 
I myself was similarly favoured. They thus number 
among them migratory individuals and permanent 
residents. In addition to attaching themselves to, and 
feeding upon, the bodies of other fishes, Lampreys are 
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