C. W. Johnson.
The Tricyphona inconstans on Nantucket Island, Mass.
Psyche 34(6):216-217, 1927.

This article at Hindawi Publishing: https://doi.org/10.1155/1927/80193
CEC's scan of this article: http://psyche.entclub.org/pdf/34/34-216.pdf, 112K
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Psyche
[December
THE TRICYPHONA INCONSTANS ON NANTUCKET
ISLAND, MASS.
Boston Society of Natural History.
while collecting insects along the margin of Upper Hum- mock Pond, Nantucket, June 25, 1926, I collected some speci- mens of this common species.
I did not examine these carefully
until my return home and was then surprised to find that the two or t,hree I had pinned had an unusual number of super- numerary cross-veins in the second submarginal cell (cell 4), whereupon I went over the sweepings from that locality and found in all 15 specimens, all having the supernumerary cross- veins confined to cell 4. The numbers of t.he supernumerary cross-veins in the right and left wings are given in the following table.
No. speciment Right wing. Left wing.
1 (Fig. I) ...................... 7 ............................ 3 3 ............................. 4............................ 3 1 ............................. ............................. 4 2 ............................. ............................. 3 3 ............................. 3............................ 2 1 ............................. ............................. 1 2 ............................. ............................. 2 1 ............................. ............................. 2 1 ............................. ............................. 1 Visiting this place again on July 16 I was unable to find a single specimen. The locality was again visited June 7, 1927, and five were obtained showing the following variation. No. Specimens Right wing. Left wing.
1 (Fig. 2). .................... .7. .......................... .4 -
1 ............................. 3............................ 3 ............................. 1 ............................. 3 2 with normal vanation.




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