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 b r e v i v e n a O. S. Recorded by 

 Osten Sacken from New York. 



7 Dicranomyia h a e r e t i c a O. S. Taken at Old 

 Forge in August. 



8 Dicranomyia i m m o d e s t a 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 1 o n g i p e n n i s 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 



14 Dicranomyia rara O. S. 1 Osten Sacken 



from New 



15 Dicranomyia rostrifera O. S. J York. 



