PREFACE. 



when at rest, to leaves and twigs of the trees they frequent is such 

 a curious subject of speculation. 



The succeeding Decades T\dll illustrate as many different genera 

 as possible, and will deal first usually with species of some special 

 interest, and of which good figures do not exist, or are not easily 

 accessible. 



Frederick McCoy. 

 11th November 1881. 



iP.S. — The recent fire at the Government Printing Office has 

 caused a delay in the issue of this Decade, the revise of which 

 bore the above date, but which is only now published. — F. McC, 



12/9/82. 



[5] 



