1 ^ 



A REVISION 



BRITISH SPECIES OE FRESH-WATER 

 CYCLOPIA AND CALANIMI. 



BY 



GEORGE STEWARDSON BRADY, M.D., LL.D., F.R.S., 



Professor of Natural History in the Durham College of Science, 

 Newcastle-on-Tyne. 



WITH FOURTEEN PLATES. 



(From the Natural History Transactions of Northumberland, Durham, and 

 Newcastle-upon-Tyne. Vol. XL, Part \). 



LONDON : 



WILLIAMS & NORGATE, 14, HENRIETTA ST., COVENT GARDEN 



AND 20, SOUTH FREDERICK STREET, EDINBURGH. 



NEWCASTLE-ON-TYNE: F. & W. DODSWORTH. 



1891. 



? f 9 1986 



