OEN 
502 Araujia Albens as a Moth-T; rap. [June 
attached to other blossoms. Knowing that many of the plants 
of the family to which Araujia belongs are poisonous, my first 
thought was that the moths attached to the blossoms, living and 
dead, were intoxicated or had been poisoned by some peculiar 
property of the nectar. 
Physianthus, or Araujia, as a moth-trap had long before been 
observed and made known, though I was not aware of it. The 
matter, however, was new to me, and the investigation full of 
interest, and an ample reward for the trouble. My curiosity was 
again revived the following year, upon what may be called the 
recurrence of the late moth season; and further investigations 
followed it. 
My note-book about this time reads : “‘ Saturday, November 5, 
_ 1881, detected the first entrapped moths of the (second) season, 
nine in number; some dead, others apparently just caught. Sun- 
day, November 6, eight or nine more; some just alive, others 
just caught. This morning (Monday, November 7), five more. 
Tuesday, November 8, a windy and cold day, two. Wednesday, 
November g, windy and cold, two;” and so on. 
The trapping seasons—for there appear to be ¢wo—occur in 
August and November. It may be that there are zwo flights of 
the principal species of moths that frequent these flowers,—one, 
the first in early autumn, with apparently a gap; then again, the 
second and last flight, as indicated, later in the year. 
My note-book shows that in the summer of 1883 the first 
flowers on my Araujia vine opened about August 19, and the 
first trapping of the season—a Jee—occurred on the following 
24th day of said month. August 25, a moth; the 26th, two 
_ moths, etc. 
The plant continues to bloom for some time after the flights 
of the moths have ceased, though the number of the flowers 
_ gradually decreases with the closing of the autumnal season. 
On turning to the figure of the flower it will be noticed that it 5 
a trumpet-shaped, flaring at the mouth, where the petals divide, 
~ then uniting and forming a tube, which is swollen into a bulbous 
n _ form where the corolla joins the calyx. Now, this enclosing 
=~ tube being pulled off, we are able to see the stamens with the 
ae side wing-like processes and the exterior spurs pressing against 
he gymnecium and hiding the ovaries and pollen-masses, as- 
heretofore B OSENG in the figures. The moth, in pursuit of | 
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