1927] 
On the Affinities of the Gryllohlaattidee 
39 
Imms, A. D. 
1925. A General Textbook of Entomology. London. 
Methuen & Co., Ltd. 
Walker , E. M. 
1914 A new species of Orthoptera, forming a new Genus 
and Family. Can. Entom., vol. 46, pp. 93-99. 
1919. On the Male and immature state of Grylloblatta 
campodeiformis Walker. Can. Entom., vol. 51, pp. 
131-139. 
1919, 1922. The Terminal Structures of Orthopteroid In- 
sects: a Phylogenetic Study. Ann. Ent. Soc. America, 
vol. 12, pp. 267-316: vol. 15, pp. 1-76. 
