CONTENTS 



A Rtudy of the North Aijierican Eumastacinac (Orthop- 

 tera; Acrididae). By James A. G. Rehn and 



Morgan Hebard 223 



(Issued September 30, 1918.) 



A Rare Coleoptera Paper of T. W. Harris. By George 



M. Greene . . 251 



(Issued September 30, 1918.) 



Diptera from the Southwestern United States. Paper IV. 



Anthomyiidao. By J. R. Malloch .... 263 

 (Issued October 28, 1918.) 



