NOTE. 



I find that a slight error has been made in the explanation of the magnifica- 

 tion represented in Plates V-VIII of my paper on the Psychodidse. 



The magnification which has been used is that which my original plates rep- 

 resented. In the preparation of the plates my original drawings have been 

 reduced about one-fourth, so that the figures as they appear are magnified only 

 three-fourths of what the explanation gives them. — Leonard Haseman. 



Columbia, Mo., Jan. 9. 1908. 



