204 NEW YORK STATE MUSEUM 



nightfall on several evenings in succession I saw a group of 

 six or eight males of this species spinning slowly around the 

 trunk in zigzag course, rising and falling, but never depart- 

 ing more than a few inches from the bark, nor rising as high 

 as the spreading branches above. By climbing a pole that leaned 

 against the trunk, and swinging a net above me I was able to 

 capture a few specimens. The other situation in which I 

 found this species was in my water tent trap [see preceding 

 chapter]. Here were both males and females, doubtless re- 

 cently emerged from the bed of the brook; or, possibly from 

 the scanty layer of moss that was exposed on some of the 

 stones in the brook. This is a very different habitat from 

 that reported from the European species of the genus — excre- 

 ment, or decaying matter [Wahlgren. Ent. Tidskr.]. 



4 Discobola argus Say. Several times reported from 

 the State, hitherto, but not encountered by me. 



5 Dicranomyia badia Walk. I collected this species 

 sparingly at " The Glen " Ithaca in May, and there are speci- 

 mens in the Cornell University collection dated in June. 



6 Dicranomyia brevivena O. S. Recorded by 

 Osten Sacken from New York. 



7 Dicranomyia haeretica O. S. Taken at Old 

 Forge in August. 



8 Dicranomyia immodesta O. S. Taken by me 

 at Old Forge in August 1905, and by Dr Betten in August 1906, 

 at Niagara Falls. 



9 Dicranomyia liberta O. S. Reported by Osten 

 Sacken from New York. 



10 Dicranomyia longipennis O. S. Reported by 

 Osten Sacken from New York. 



11 Dicranomyia moniliformis Doane. Described 

 by Doane from Long Island. 



12 Dicranomyia morioides O. S. Reported by 

 Osten Sacken from Trenton Falls. I observed males at ''' The 

 Glen " Ithaca about the middle of June 1907, swarming in vast 

 companies, over an open roadway and in the hollow of a hill- 

 side meadow. 



13 Dicranomyia pubipennis O. S. ^ Reported by 



^ , TA • • r\ c I Osten Sacken 



14 DicranomyiararaO. S. > 



from New 



15 Dicranomyia rostrifera O. S. J York. 



