x biological society of washington". 



One Hundred and Twenty-sixth Meeting. 

 April 21, 1888. 



The President in the chair, and thirty-five members present. 



Mr. F. W. True read a communication on The Affinities 

 of the White Whale. Discussed by Dr. Merriam and Dr. 

 Dall. 



Dr. C. Hart Merriam presented notes on A Bat New to 

 the United States, and New Localities for other 

 North American Mammals. Discussed by Mr. True. 



Prof. C. V. Riley read a paper entitled Notes on Platy- 

 psyllus.* Discussed by Mr. Dall. 



Dr. Geo. Vasey read Part II of his paper on Foreign Trees 

 and Shrubs Cultivated in the District of Columbia. 

 Discussed by Messrs. VanDeman, Ward, and Riley. 



One Hundred and Twenty-seventh Meeting, 



May 5, 1888. 



The President in the chair, and twenty -two members present. 



Dr. R. E. C. Stearns read a paper on Instances of Muta- 

 tion in Specific Distribution among Shells. Discussed 

 by Mr. L,ucas. 



Mr. C. L,. Hopkins presented Notes upon Pollenation of 

 the Navel Oranges. Discussed by Messrs. Ward, VanDe- 

 man, A 1 wood and Dall. 



Dr. C. Hart Merriam read A Description of a New 

 Meadow Mouse with Remarks on the Sub-genus 

 PEDOMYS.f Discussed by Mr. True. 



Prof. L. F. Ward presented a communication entitled On 

 some Characteristics of the Flora of the Potomac 

 Formation. 



* 1889. Insect Life, Vol. I, p. 300. 



t 1888. Merriam, C. Hart. Description of a new Prairie Meadow 

 Mouse {Arvicola austerus minor) from Dakota and Minnesota Am. 

 Nat., July, 1888, 598-601, figs, of skull and teeth. 



