24 Annals Entomological Society of America [Vol. VI, 



Most of our species of Neiirigona are found on the trunks of 

 trees but I sometimes take specimens, mostly of the riihella 

 group, while sweeping. In most cases these insects will fly to a 

 tree and alight instantly and rest in one position until they are 

 disturbed or wish to change their location when they make a 

 quick short flight alighting generally a little distance higher up 

 or sometimes to one side, seldom or never lower down. I have 

 often seen them start near the ground and work upwards in 

 short flights until they disappeared from view at a height of 

 perhaps eighteen feet. The male often comes to a tree and 

 flies upward in a perfectly vertical line about two inches from 

 the trunk until it disappears from sight or alights about twelve 

 feet or more above the ground ; it may be looking for the female 

 or possibly seeking its prey. In several instances I have seen 

 individuals feeding on Psocid larva. 



I have watched the courtship of the males a number of 

 times, they hover over the female for a few seconds and then 

 try and alight upon her, but only once did I see the union 

 consummated, in all other cases the female darted away. 



As far as I can learn the only species in our fauna that has 

 been bred is N. viridis n. sp. Mr. James Angus, of West Farms, 

 N. Y., makes the following note on this species: "Larva feeding 

 in rotten wood of hickory." We have no description of this 

 larva or pupa, but a pupa case is mounted with Mr. Angus' 

 specimen in the National Museum collection. 



The sexes of this genus seem to be unevenly distributed. 

 At one time I will take nearly all males, at another mostly 

 females. One afternoon I took seven males and thirty-five 

 females of tenuis, while the next morning in woods a mile and a 

 half distant I took twenty-two males and but nine females of 

 the same species. At another time I took fourteen males of 

 floridula var. injuscata and no female, but with them were sev- 

 eral males and females of deformis n. sp. At another time I took 

 many males of tarsalis in one spot with females of two other 

 species, and a half mile farther on found both males and females. 



The drawings for this paper were made with a camera 

 lucida by Mr. William Wild, of East Aurora, N. Y. The draw- 

 ings of the hypopygiums give a good idea of the general 

 appearance but no attempt was made to go into anatomical 

 details. 



