THE 
TRANSACTIONS 
OF 
THE LINNEAN SOCIETY 
OF 
LONDON. 
VOLUME XXI. 
PART THE FOURTH. 
LONDON:. 
PRINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET: 
SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON-HOUSE ; 
AND BY LONGMAN, GREEN, LONGMANS, AND ROBERTS, PATERNOSTER-ROW. 
M.DCCC.LIX. 
