A HISTORY OF CUMBERLAND 
CYCLOSTOMES 
** 98. Sea Lamprey. 
Linn. 
Petromyzon marinus, 
The Eden was at one time famous for the 
excellence of its lampreys, which were specially 
reserved in some titles of river rights. The 
Esk was also visited for spawning purposes. 
This species has been taken of late years in 
a very few instances. On July 20, 1898, I 
purchased a lamprey weighing about 24 Ib., 
which had been taken in the Eden, a beautifully 
coloured fish. It was in company with another 
which eluded capture. 
*99. Lampern. Petromyzon fluviatilis, Linn. 
Fairly numerous in our larger rivers. Great 
numbers have been killed in the Eden by 
sudden frost. 
*100. Mud Lamprey. Petromyzon branchialis, 
Linn. 
Locally, Lamper Eel. 
Not uncommon in small becks in the Eden 
valley and north and west of the county. It 
is delightful to watch the engineering feats 
displayed by this tiny fish in moving stones 
from the gravelly bottom of a clear stream. 
Note.—A single asterisk (*) accompanies the names of such species as are confined to fresh-water. 
Two asterisks (**) distinguish such species as may be taken in either fresh or salt-water. 
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