XII BIOLOGICAL SOCIETY OF WASHINGTON. 



Dr. C. Hart Merriam described A NEW SPECIES OF BAT, 

 VESPERTILIO CILIOLABRUM, from the Western States.* 



ONE HUNDRED AND FIRST MEETING, December n, 1886. 



The President in the chair, and twenty-three persons present. 

 The following papers were read : 



Dr. Theobald Smith, PARASITIC BACTERIA AND THEIR RE 

 LATION TO SAPROPHYTES. 



Mr. F. A. Lucas, ON THE OSTEOLOGY OF THE SPOTTED TIN- 



AMOU, NOTHURA MACULOSA.f 



Mr. C. D. Walcott, CRUSTACEAN TRACKS FOUND ON STRATA 

 OF UPPER CAMBRIAN (POTSDAM) AGE. 



Dr. Frank Baker, THE FORAMEN OF MAGENDIE.J 

 Dr. C. Hart Merriam, DESCRIPTION OF A NEW SUB-SPECIES 

 OF POCKET GOPHER, FROM THE COLORADO DESERT OF SOUTH 

 ERN CALIFORNIA: 



ONE HUNDRED AND SECOND MEETING, January 8, 1887. 

 (Seventh Annual Meeting.) 



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



The annual reports of the Secretary and Treasurer were read 

 and accepted. 



The following board of officers was elected for the ensuing 

 year : 



President Mr. William H. Dall. 



Vice-Presidents Prof. Lester F. Ward, Dr. Frank Baker, 

 Mr. C. D. Walcott, Dr. C. Hart Merriam. 



Secretaries Mr. Richard Rathbun, Mr. Frederic A. Lucas. 



Treasurer Mr. F. H. Knowlton. 



* 1886. These Proceedings, iv, pp. 1-4 (Extras issued Dec. 17, 1886). 

 fi886. Proc. U. S. Nat. Mus., p. 157. 



\ Embodied in the article, " Meninges," Wood's Reference Hand-book of 

 Medical Sciences, vol. viii. 

 Science, Dec. 24, 1886, 588. 



