CONTENTS. 



Proceedings. 



How Sanguinary Ants Change Direction . A. C. Burrill 



The Whitefish of Silver Island Lake, Minnesota . George Wagner 



A New Species of Chalcophora from Wisconsin . Richard A. Muttkowski 



The California Ground Squirrel and Bubonic Plague 



William Colby Rucker 



Studies in Plant Distribution ..... Ernest Bruncken 



Applicability of Certain Generic Names of Odonata 



Richard A. Muttkowski 



A New Sparrow Record in Wisconsin . . . I. N. Mitchell 



Eujallia, a New Name for Belonia Fall (Coleoptera) 



Richard A. Muttkowski 



Actual dale of publication, Oct. 6, 1910. 



