m8 __ENTOMOLOGICAL NEWS. 219 
h great masses of them as those on the cottonwood 
Tentioned. With them we observed two Other species 
us that on previous occasions we had not noticed. Not 
¥ an entomologist, however, I should hesitate to state that 
yY were not then present. These two were Papilio cres- 
s and a black swallow-tail not quite so large that I am 
y wa satisfied was P. troilus. I collected specimens but 
ently lost them so have to rely upon an uneducated 
'y and the probabilities. Of these two the former was 
nf 
en the more common but both were abundant. I under- 
and that these latter forms are not supposed to migrate but 
re they were certainly, without exception, flying down the 
t and crossing over the lake along the same course fol- 
xd by the the Monarchs. There was no indications of flock- 
n these two species nor did they seem to associate with 
tay or with plexippus but at all times of the day there 
Load stream of them, making in the same direction, 
y and without fee tacctee. 
¢ Point ends in a long sand pit which we visited almost 
on all such occasions, except during rather heavy 
es crane cus the Point to the ex- 
and then launching directly out into the lake along 
route that most of the diurnal birds followed, not 
Pelee Island, the first of the island stepping stones 
tha t lies plainly visible some ten miles distant; but taking 
"a more westward line that would carry them straight across 
+ the open lake. They came at the rate of about three a minute 
hed fine days and cresphontes was the most numerous of them 
3 “adg were fewer plexippus than troilus. It was most in- 
ot a x to watch them come, and observe the regularity and 
aS “apparent deliberateness of their movements. On calm days 
_ they came right down the center of the Point and followed 
Se “every winding of the final sand spit to its extreme termination 
from whence they turned and squared away on the course 
as described before. At times when there was a little wind 
_ their proceedings were a little different. As soon as they reach- 
” the end of the heavier timber they kept well down in the 
