BOREAS. 
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Generic Character. 
AntenruB setaceous, decreasing in size from the 
base to the point. 
Wings (when at rest) generally deflected. 
Flight mostly nocturnal. 
Specific Character, (Ac. 
Grey PHAIAENA, with tailed, wings variegated 
with brown, the upper pair marked by two 
transparent spots, the lower with one. 
BOREAS. 
Lin. Gmel. 
Cram. ins. pi. 70. f. B. 
This species, which may be justly considered as 
one of the rarest of its tribe, is a native of South 
America, and is represented on the plate in its natu- 
ral size. 
