148 ENTOMOLOGICAL SOCIETY 



JANUARY 4TH, 1891. 



The sixty-eighth regular meeting and Sixth Annual 

 Meeting. 



President Marx in the chair. Eleven members and two 

 visitors present. 



The officers for the past year were re-elected as follows : 

 President, George Marx ; Vice-Presidents, C. V. Riley and L- 

 O. Howard ; Recording Secretary, C. L,. Marlatt ; Correspond 

 ing Secretary, C. H. Tyler Townsend ; Treasurer, B. Pickman 

 Mann ; Executive Committee, E. A. Schwarz, Otto Heide- 

 mann and William H. Fox. 



The President, Dr. Marx, delivered his Annual Address : 



ANNUAL ADDRESS OF THE PRESIDENT. 



A LIST OF THE ARANE^E OF THE DISTRICT OF 

 COLUMBIA. 



BY DR. GKO. MARX. 



In selecting a theme for my presidential address, I was 

 induced by several reasons to choose as such a paper on the 

 local Spider-fauna of the District of Columbia. 



First, I wanted to avail myself of the opportunity to report 

 my part as a member of a committee of this Society, appointed 

 two years ago to prepare faunal lists of the District for the 

 different branches of Entomology. 



Secondly, I hoped that by presenting to you a list of the 

 Spiders collected by me in this region I could induce my 

 co-laborers in Arachnology to follow my example and con 

 tribute such additions to my incomplete work as would reflect 

 a greater value upon it. 



The third reason was the importance of the subject ; 

 for the first and most important foundation-stone for the 

 knowledge of the limits of those cosmic conditions under 

 which a biological species is able to exist, or, in other words, 

 its geographical distribution, is a well determined list of a 

 local fauna. May such a list be ever so small and incomplete, 

 providing the determinations are correct, it will serve as a 



