Vol. xxii] ENTOMOLOGICAL NEWS. 353 



so closely with Loew's detailed description (as Cladura fnscula, 

 Beschr. Europ. Dipt. Ill, p. 65), that it must be referred to 

 senilis until a comparison with European specimens proves it 

 otherwise. 



The fly is very common in Fulton County, New York, in 

 late summer and early autumn, and with the exception of the 

 all-predominant Cladura flavofermginea O. S., is the most 

 common Amphinomine (Limnobine] at this season. 



The venation, as shown by figure 4, is, in general, similar 

 to a Phylidorca (Limnophila), but Sc l is longer than in any 

 of the species of this genus in Eastern America, at least. All of 

 the distal cells possess long prominent hairs on the membrane. 

 These hairs occur all over cells 2nd R 1 , R 2 , R s , R 5 , M\ M 2 , 



Fig 4. Adelpkomyia senilis wing. 



Af 3 , CM 1 , a few in cell 2nd M 2 (discal cell of authors), and 

 a few on the extreme distal edge of cells Cu, R and Sc l . There 

 is never any of this hairiness on the proximal half of the wing 

 as in Ulomorpha and the character of the hair is different in 

 the two genera. 



Adelphomyia senilis might be mistaken for a small Phyli- 

 dorea, but it is smaller than any of the described Eastern spe- 

 cies. From Ulomorpha, it readily separates by its smaller size, 

 presence of cell M 1 and characters mentioned above. 



In Fulton County, New York, the species is well distributed, 

 as follows : 



(1) Woodworth's Lake; alt. 1665 ft.; Aug. 21, 22, '09; Aug. 

 22, 1910. 



(2) Sport Is. ; Sacandaga R. ; alt. 750 ft. ; one only, Aug. 24, 

 1910. 



