X The Biological Society of Washington. 



J. N. Rose : A Very Curious Plant from Mexico. 

 Theo. Gill : The Segregation of Freshwater Fishes. 

 A. B. Baker : Exhibit of Living Animals at the St. Louis 

 Exposition. 



November 5, 1904 — 390th Meeting. 



Vice-President Hay in the chair and 4(5 persons present. 



Ch. W. Stiles spoke briefly of the meeting of the International 

 Committee on Zoological Nomenclature in Berne. 



The following communication was presented : 



Gen. T. E. Wilcox : The Flora of tlie Western United States 

 and Alaska. 



November 19, 1904 — 391st Meeting. 



The President in the chair and 34 persons present. 



B. W. Evermann spoke of the abundance of waterfowl at 

 Lake Maxinltuckee, Indiana, about November 5, 1904. 



The following communications were presented : 



E. L. Greene : A Chapter in the Evolution of Generic Nomen- 

 clature . 



David White : A New Seed-bearing Fern.* 



December 5, 1904 — 392nd Meeting. 



The President in the chair and 35 persons present. 



G. K. Gilbert exhibited photographs and specimens of the 

 bark of the aspen tree showing marks made by the claws of 

 bears and other animals. 



The following communications were presented : 



H. W. Oldys : Some New^ Bird Songs. 



W. H. Dall : The Pvelations of the Non Marine Mullusk Fauna 

 of Alaska. t 



B. W. Evermann : A Trip to Mount Whitney. 



* The Seeds of Aneimites, Smithsonian Misc. Coll. (Quart. Issue), XLVII, pp. 322-331, 

 pis. XLVII-XLVIII, 1904. 



t To be published in Popular Science Monthly. 



