COEEIGENDA. 



In addition to the facilities offered in the Preface, in the article of Prof. Claypole, 

 and in the Index of Genera for correcting specific names, the following corrections are 

 deemed worthy of notice : 



Read horny fracture for corny fracture, on page 13. 



Read opusculum for opusculus, on page 67. 



Read pistillum for pistillus, on page 72. 



Read rhombiferus for rhombiferous, on page 85. 



Read ramus for remos, on page 85. 



Read varsoviensis for varsouviensis, on page 86. 



Read pumilus for pumilis, on page 87. 



Read differens for difTerentis, on page 104. 



