PREFACE TO THE SECOND EDITION. 



In publishing a Second Edition of this little treatise^ 

 the opportunity has been taken of carefully revising 

 the text, and improving the details of the engravings, 

 some of which are new. 



In the second part of this Series, in the " Honey 

 Bee," more ample details of the structure of the 

 eyes, antennse, and internal organization of the iasect 

 races wiU be found, than have been here presented. 



Liverpool, July 1860. 



