OF WASHINGTON. 185 



plants in the Missouri Botanic Gardens. The plants were a Sal- 

 vinia and Azolla caroliniana. He found cocoons of the beetle, 

 but only one injured larva. This larva looked like that of Phy- 

 tonomus. The cocoons are spherical, composed of a dense, gluey 

 substance, somewhat disguised by cut leaves. They are perfectly 

 impervious to water, although submerged in many instances. 

 The beetle he believed to be Stenopelmus rufinasus, which, 

 according to Dr. Le Conte, is widely distributed in North Amer 

 ica. Dr. Riley's St. Louis specimens are larger and darker than 

 a series in the National Museum, from southern California, and 

 probably form a distinct variety, possibly a new species. 



DECEMBER 6, 1894. 



President Ash mead occupied the chair, and the other members 

 present were : Messrs. Gill, Marlatt, Benton, Schwarz, Hubbard, 

 Linell, Vaughan, Test, Heidemann, and Coquillett. Prof. A. D. 

 Hopkins, of Morgantown, W. Va., a corresponding member, 

 was also present. 



Richard Heymons, Ph. D., of the University of Berlin, Berlin, 

 Germany, was elected a corresponding member. 



The election of officers to serve during the ensuing year then 

 took place. On motion of Mr. Hubbard, seconded by Mr. 

 Schwarz, the Secretary was instructed to cast a ballot for the 

 re-election of all the present officers. 



The following paper, by Prof. Herbert Osborn, was read by 

 Mr. Benton : 



THE PHYLOGENY OF HEMIPTERA. 

 By HERBERT OSBORN, Ames, Iowa. 



For some time it has seemed to me that the current classifica 

 tions of Hemiptem are very far from representing the true phy- 

 logeny of the families of this group, and the present paper, giving 

 substantially the views I have stated to my advanced classes in 

 entomology for the last two or three years, is an attempt to 

 express what seems a more rational relationship between these 

 families. The scheme adopted by Uhler and Comstock may be 

 considered as representative of the current ideas, and comparisons 

 may be conveniently made with their systems in this discussion. 



