xii Proceedings of the Biological Society of Washington. 



April 22, 1916— 555th Meeting.* 



President Hay in the chair and 24 persons present. 



Dr. Howard E. Ames commented on a South American mam- 

 mal i^Myocastor coypii) having mammae on the dorsal surface of 

 the body and answered the previous question as to the ability 

 of camels to swim in the affirmative. 



Dr. H. F. Blodgett discussed the embryology of the duck 

 weed Lemna, exhibited seeds and showed diagrams. 



The regular program consisted of two communications, as 

 follows : 



Native Plants as Indicators of the Agricultural Value of 

 Land"; T. H. Kearney. 



"Comparative Study of Certain Cranial Sutures in the Pri- 

 mates"; R. W. Shufeldt. 



May 6, 1916— 556th Meeting.f 



President Hay in the chair and 45 persons present. 



The regular program consisted of three communications, as 

 follows : 



" Longevity of Bacteria "; M. W. Lyon, Jr. 



" The Amphisbsenoid Lizards and their Geographic Distribu- 

 tion " ; Dr. L. Stejneger. 



' ' Sketch of the Natural History of the District of Columbia ' ' ; 

 W. L. McAtee. 



May 20, 1916— 557th Meeting.! 



President Hay in the chair and 30 persons present. 

 Dr. Howard E. Ames exhibited photographs of a female coypu. 

 The regular program consisted of three papers, as follows : 

 " Some Fungi that Kill Insects " ; A. T. Speare. 

 Possible use of Lachnosterna larvae as a Food Supply ' ' ; 

 L. O. Howard. 



"Agriculture in Pre-Columbian America " ; W. E. Safford. 



♦Abstracts in Journ. Washington Acad. Sci.. Vol. 0, pp. 3C2-364, June 4, 1916; and 

 in Science, N. S., Vol. 43, pp. 941-942, June 30, 1916. 



t Abstracts in Journ. Washington Acad. Sci., Vol. 6, pp. 406-407. June 10, 1916; and 

 in Science, N. S., Vol. 43, p. 942, June 30, 1916. 



1 Abstracts in Science, N. S., Vol. 44, pp. 3.^36, July 7, 1916; and in Journ. Washing- 

 ton Acad. Sci., Vol. 6, pp. 519-520, August 19, 1916. 



