92 
Psyche 
[June 
rounded and more anteroposteriorly compressed node. The 
antennae are 10- jointed as in luzonensis, with the funicular 
joints 3-8 broader than long. The thorax seems to be stouter 
and shorter than in the species from the Philippines, but 
the integument is still so soft, that I can infer nothing in 
regard to the adult proportions of its various sclerites. 
A FLIGHT OF PIERIS MONUSTE 
I was much interested in the account by Dr. E. D. Ball 
and W. E. Stone of “A puzzling Butterfly Migration” 
(Science, vol. 68, p. 110, 1928) . It reminds me of a migration 
which occured while I was living at St. Augustine, Florida. 
In June, 1881, there was a northward flight of Pieris 
monuste lasting for three days. On the first and second days 
it was a marvelous sight like a snowstorm with large flakes 
obscuring the view. On the second day a New York schooner 
(“Nellie Grant”) came in. I knew the captain quite well and 
asked him when he first saw the flight and he said — “Yester- 
day afternoon about ten miles off shore.” It was the first and 
only flight I saw during the eight years I lived in Florida, 
and was noticed at the time as far north as Charleston, 
S.C. Many asked me the cause of this great flight. I at- 
tributed it to a search of the insect for more food plants. 
There are many cruciferous plants along the sea-coast 
that are often destroyed by the larvae. The first brood having 
devoured all the food plants of the species along the more 
southern part of the Florida coast, the second brood was 
compelled to migrate, and in this case it was northward. 
This flight was recorded in the American Naturalist, 
Vol. 15, p. 577, 1881. The report was from Bluffton, near 
Beaufort, S.C., and occurred June 1 and 2. They were flying 
“East or northeast.” As they were apparently following the 
coast, this would naturally be the direction they would be 
flying east of Savannah. 
C. W. Johnson. 
