]48 



THE ENTOMOLOGIST. 



Fig. 27.— Ptychoptera. 



Fig. 30. — Nemotelus pautberiuus. 



In Limnobia and in Limnophila (figs. 25, 26) it will be 

 seen that the general arrangement of the wing-bones is like 

 that of Dixa, and that the proebrachial is forked in Dixa and 

 in Limnophila, and is undivided in Limnobia. The numerous 

 variations of these bones in Limnobia are considered as 

 sections by Meigen, and as genera by more recent authors. 



i 



