PROCEEDINGS. XI 



Dr. Theobald Smith spoke ON SPECIKS AMONG BACTERIA. 

 Discussed by Mr. True, Dr. Gill, Drs. Riley, Curtice, Mr. 

 Banks. 



Mr. Sudworth presented a communication entitled NOTES 

 ON NOMENCLATURE. Discussed by Dr. Merriam. 



ONE HUNDRED AND SIXTY-EIGHTH MEETING. 

 December 13, 1890: 



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



Mr. A. B. Baker was elected an active member. 



Mr. Wm. Palmer read a paper on THE OCCURRENCE OF 

 THE ASIATIC CUCKOO ON THE PRIBYLOV ISLANDS. Dis 

 cussed by Dr. Dall. 



Dr. Riley presented some NEW NOTES ON THE GENUS 

 PHYLLOXERA. 



Mr. True spoke on THE TEETH OF THE MUSKRAT. 



Mr. Lucas read a paper on THE WING OF METOPIDIUS. 

 Discussed by Mr. True. 



ONE HUNDRED AND SIXTY-NINTH MEETING, 

 December 27, 1890. 



The President in the chair, and twenty-six members 

 present. 



The following active members were elected : J. M. Holzin- 

 ger, Frederick C. Test. 



Dr. Cooper Curtice presented a communication entitled A 

 PRELIMINARY STUDY OF TICKS IN .THE UNITED STATES. 

 Discussed by Dr. Smith. 



Dr. C. Hart Merriam exhibited A NEW RABBIT FROM THE 

 SNAKE PLAINS OF IDAHO.* 



Dr. W. H. Dall read a paper entitled ON THE TOPOGRAPHY 

 OF FLORIDA WITH REFERENCE TO ITS BEARING ON FOSSIL 

 FAUN AS. f 



* (Lepus idahoensis] North American Fauna No. 5, July, 1891, pp. 76-78. 

 t Bulletin 84, U. S. Geol. Survey. (In press.) 



