Proceedings. xi 



October 24, 1896— 264th Meeting. 



The President in the chair and forty persons present. 



The following communications were presented : 



C. Hart Merriam : A New Fir from Arizona* 



F. V. Coville : Notice of Britton and Brown's Illustrated Flora 

 of the Northern United States and Canada. 



Erwin F. Smith: A Bacterial Disease of Potatoes, Tomatoes, 

 and Egg-plants. t 



Under the head of Brief Notes — 



Erwin F. Smith exhibited Leaconostoc from a sugar vat in 

 Louisiana. 



F. V. Coville exhibited Proiococcm nivalis and Nymphpea polij- 

 sepala. 



C. L. Pollard reported Iresine paiiicidata as an addition to the 

 flora of Washington, D. C. 



A. F. Woods : The Spotting of Maple Leaves. 



B. E. Fernow : Spiny Plants from Arizona. 



C. Hart Merriam reported the addition of a rare shrew {S:)re.c 

 vermpacis) from Guatemala to tlie U. S. National Museum, mak- 

 ing the collection of North American shrews complete. 



November 7, 1896— 265th Meeting. 



The President in tlie chair and forty-four persons present. 

 The following communications were presented : 

 Theo. Gill: The Category of Family or Order in Biology. 

 C. Hart Merriam : Notes on the Fauna of Oregon. 

 C. Hart Merriam: Supplementary Notes on Tropical Ameri- 

 can Shrews. 



Under the head of Brief Notes — 



F. V. Coville spoke of a new Species of Juacas.l 



L. 0. Howard : Hymenopterons parasites of Shade-tree Lisects. 



November 21, 1896— 266th Meeting. 



Vice-President L. 0. Flo ward in the chair and forty-seven 

 persons present. 



The following communications were presented : 



G. H. Hicks : The Mildews (Erysiphess) of Michigan. § 



*Proc. Biol. Soc. Washu., x, pp. 115-118, November 3, 1896. 



t Bull. No. 12, Div. of Vegetable Phys. & Path., U. S. Dept. Agriculture. 



jProc. Biol. Soc. Wasb'n, x, pp. 127-1:50, November 14, 1896. 



^ To be published ia vol. xi, Proc. Biol. Soc. 



