viii The Biological Society of Washington. 



February n, 1905 397th Meeting. 



The President in the chair and 68 persons present. 



Vernon Bailey exhibited a large pearl mussel from Texas. 



L. O. Howard noted the first authentic record of Stegomyia on 

 the Pacific coast of Mexico.* 



The following communications were presented : 



Albert Mann: Diatoms. t 



E. A. Mearns: Animal Life of Mount Apo of the Philippine 

 Islands.! 



February 25, 1905 3g8th Meeting. 



The President in the chair and 37 persons present. 



C. E. Waters presented remarks on Dr. Mann's paper on 

 diatoms at the preceding meeting. 



E. L. Greene noted the work of P. I. Rafinesque of Switzer- 

 land. 



The following communications were presented: 



E. L. Greene: The Earliest Local Flora. 



David White: Fossil Plants of the Group Cycadofilices. 



March n, 1905 39gth Meeting. 



The President in the chair and 87 persons present. 

 L. 0. Howard exhibited several articles woven from artificial 

 silk. 



E. L. Morris noted the new edition of Cassino's Naturalists' 

 Directory. 



F. H. Blodgett exhibited a microscopic mount of an ant. 



F. H. Knowlton noted recent papers on the salts of human 

 blood. 



The following communication was presented: 

 Willett M. Hays: Breeding Problems. 



March 25, 1905 4ooth Meeting. 



Vice-President Hay in the chair and 77 persons present. 



M. W. Lyon, Jr., and others noted the large number of crows 



* To be published in a monograph by the Carnegie Institution, 

 t Smiths. Misc. Coll. (Quar. Issue), XLVIII, 1, 1905. 

 t Proc. U. S. Nat. Mus. XXVIII, 425-460, 1905. 

 I Plant World, 1905. 



