tlUANIA. 
201 
it spins an oval cocoon of yellow silk, the meshes 
of which are so lax as to allow the inmate to 
be easily seen. The pupa is not at all angular. 
“ The perfect butterfly,” he adds, “ is perfectly 
diurnal, and very swift in its flight. It is not found 
in the interior of the island, but it may be seen in 
plenty as far as two or even three leagues from the 
coast, sporting in the sun, and sucking the flowers of 
Oestrum diurnum , Ehretia tiiiifolia, and other odori- 
ferous trees of small stature. In hot weather and 
about mid-day it flies particularly high, and may 
be even observed surmounting the tops of the highest 
members of the forest. In the afternoon I have 
often seen it sport about some capriciously chosen 
spot, such as a particular branch of Mango, where it 
would always return to alight on almost the same leaf, 
in a manner that has sometimes reminded me of a 
well known habit of the Musicapce. Thus does our 
insect spend whole hours until sunset, when the bats 
usually terminate its diversion and its life. On the 
approach of winter it may be seen at times alighting 
on hedges, when specimens are more easily cap- 
tured. The flight, however, of U. Fernandinae is 
always strong, and it starts like the Fringillidce. 
When it alights on a leaf, all the four wings are 
expanded horizontally ; and rarely, if ever, take a 
vertical position, like those -of the species of the 
Linmean genus Papilio, when at rest 
Trans, of Zool. Society of London, i. p. 187. 
