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Genus URANIA. 
As already mentioned, Urania is distinguished from 
all other groups, except Thaliura, by the shape 
of the antenna;, and an obvious character for sepa- 
rating it from that is the presence of only a single 
tail. The palpi are short and project a little beyond 
the head, the terminal joint being nearly naked. 
The tibiae of the anterior legs are furnished with 
spines in the middle ; and the claws are minute. 
"When at rest the anterior wings are kept in a hori- 
zontal position, or hut slightly turned upwards ; 
one peculiarity among many others in which they 
resemble the nocturnal lepidoptera. We are in- 
debted to Mr. Macleay for an account of the meta- 
morphoses of a species which he has named U. 
Femandince, hut which is probably synonymous 
with some previously known. The caterpillar feeds 
on a kind of Omphalea which grows abundantly on 
the sea-coast of Jamaica. It never appears during 
the heat of the day, hut reposes in a torpid state 
within a thin transparent weh on the under side of 
the leaves, in order to avoid the rays of the sun. 
Its only time of feeding is dinring the night. In 
its appearance and habits it shows more affinity to 
the larva; of the Bombycidae than to the diurnal 
Lepidoptera. When about to change to a chrysalis 
