180 ARTHUR G. VESTAL. 



'i2b Ecological Succession. V. Aspects of Physiological Classification. Biol. 



Bull., 23: 331-370. 

 Shull, A. F. 



'n Thysanoptera and Orthoptera (of the Saginaw Bay region, Michigan). 



In Ruthven, 1911: 217-231 (section on Orthoptera). 

 Vestal, A. G. 



'133 Notes on Habitats of Grasshoppers at Douglas Lake, Michigan. Ent. 



News. (In press; collection records and dates.) 

 'i3b An Associational Study of Sand Prairie. (In press.) 

 Walden B. H. 



'n The Ruplexoptera and Orthoptera of Connecticut. Conn. State Geol. and 



Nat. Hist. Surv., Bull. No. 16: 41-169. 

 Walker, E. M. 



'03 The Genus Podisma in Eastern North America. Canad. Ent., 35: 295-302. 

 Woodward, A. E. 



'n The Orthoptera Collected at Douglas Lake, Michigan, in 1910. Mich. 

 Acad. Sci , 13: 146-167. 



