INTRODUCTION, vii 



Phasmid.e. 

 A o-reat monogTaph on this family has been puhlished by 

 Brunner von Wattenwyl and J. Redtenbacher, ' Dio Insekten- 

 familie der Phasmiden ' (3 parts, 4to, Leipzig, 1906, 1907 

 1908), which supersedes everything previously published on 

 this group. 



Phasgonurid^. 

 Dr. A. Griftini has given special attention to the great genus 

 Gryllacris, on which he has published an important series ot" 

 papers. 



The Order Orthoptera is the smallest of the seven great 

 Orders of Insects, with perhaps the exception of the Neuroptera; 

 but it contains many species of exceedingly curious forms, and 

 others of much economic importance from their numbers and 

 destructiveness. The Order has hitherto been somewhat 

 neglected, but appears likely to attract an increasing number 

 of students from year to year. 



W. F. KIRBY. 



British Muskum (Natural History), 

 London, S.W. 

 JNJarch, 1910. 



