NOTICE. 



The Woodcuts, by which the genera are illustrated, and 

 which have been made by Messrs Sclater and Son, Edin- 

 burgh^ from original drawings by the Author, represent the 

 parts of half their natural size. 



ERRATA. 



Page 121, 18th line from top, /or mangorve read mangrove 



126, 2d line from bottom, omi^and. emarginate 



148, last line, omit middle 



149, first line, /or the inner coat read its surface 



194, 3d and 4th lines from bottom, for the middle coat thin 



and tough, the inner soft and easily separated read 

 the inner coat thin and tough, its inner surface soft 

 and smooth. 



215, 7th line, insert 1212 



230, 23d line, /or anterior read inner 



252, 7th line from bottom, /or daws read dames 



