PROCEEDINGS. XI 



Dr. Theobald Smith spoke Ox Species Among Bacteria. 

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

 Banks. 



Mr. Sudworth presented a communication entitled XoTES 

 ON Nomenclature. Discu.ssed bv 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 bv INIr. 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 w^th Reference to its Bearing on Fossil 

 Faunas, t 



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

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



