Rehn (James A. G.) 
Description of New and Critical Notes upon Previ- 
ously Known Forms of North American Oedipodinae 
(Orthoptera; Acrididae). Second Paper . . . 171 
(Issued December 22, 1921.) 
Studies in Costa Rican Dermaptera and Ortliop- 
tera. Paper Gne. Two New Genera and Three 
New Species of Dermaptera . 307 
(Issued Marcli 3, 1922 ) 
