90 ETERUSIA TRICOLOR. 
by having the wings narrow and entire, the anterior 
apical nerve trifurcate, the middle nerve also trifur- 
cate, the branches nearly straight; under wings 
rather short, entire, the cell elongated, and the apex 
emitting nerves which are nearly straight ; antennae 
of the female slender, very slightly serrated on one 
side ; tongue spiral, elongated ; palpi short ; abdo- 
men provided with a small exserted terebra. TJie 
species figured expands two inches eight hnes. 
Head dark violet, antennee black; anterior wings 
greenish, marked Avith several white spots; the 
hinder pair orange at the base, the exterior half 
black, passing into violet towards the apex, and 
spotted with white. The thorax is velvet black, 
tinged before and behind with violet. Abdomen 
orange, the first or basal segment violet. Under side 
of the body violet-blue, the segments of the abdo- 
men alternately variegated with white and black. 
This inse9t is a native of Assam. " It appears," 
says Mr. Hope, in whose extensive collection speci- 
mens are preserved, " to be a nondescript, and is 
one of the most beautiful in colouring of my ac- 
quaintance ; it is probably one of the genera of a 
family peculiar to the East Indies. Little is known 
of the oriental Lepidoptera, except those described 
in the Annulosa Javanica of Dr. Horsfield, so much 
so that I hesitate in hazarding an opinion respecting 
them. It is almost impossible to describe the beau- 
tiful colouring of this lovely insect ; the dye of the 
under wings is of a rich mazarine blue, which 
passes insensibly into violet and black. In affinity 
