1927] The Tricyphona inconstans on Nantucket Island 217 
On June 22, 1927, at the same locality 18 specimens were 
taken, showing the following variation. 
No. specimens. 
Right wing. 
Left wing. 
J 4 
1 ...5 
1 4 
2 4 
1 (Fig. 3).. 3 
2 3 
1 (Fig. 4).. 5 
1 4 
1 3 
1 2 
1 2 
2 1 
6 
2 
4 
3 
4 
3 
2 
1 
2 
3 
2 
2 
1 with normal venation. 
1 with discal cell open on the left wing. 
1 with the first submarginal cell (cell 3) normal on the right wing, but 
on the left wing of the same length as cell 4. 
Figs. 1-4. Wings of Tricyphona inconstans. 
In 1901 I published a paper on the variation of this species 
(Entom. News, vol. 12, p. 305) but, the material at hand was 
from various localities and as usual only a small percentage of 
the specimens taken showed abnormal venation. To find there- 
fore a locality where the conditions were reversed seemed very 
remarkable, and that the supernumerary veins should all be con- 
fined to cell 4 was likewise interesting. In examples where the 
supernumeraries are numerous or where some of them are oblique 
there is a tendency for the longitudinal veins to be imperfect. 
This part of the vein is indicated by dots in the accompanying 
figures. If this species could be readily bred it would form an 
interesting subject for a study in genetics. 
