TO 



SIR JAMES EDWARD SMITH, M.D. 



F. R. S. 



PRESIDENT 



OF 



THE LINNEAN SOCIETY 

 Sfc. Sfc. Sfc. 



THE FOLLOWING WORK 



IS INSCRIBED, 



WITH ESTEEM AND RESPECT, 



BY 

 HIS MOST OBEDIENT, 



HUMBLE SERVANT, 



€I;e author. 



