of the Amazon Valley. 339 
153. Agrias Hewitsonius, Bates. 
Agrias Hewitsonius, Bates, Proc. Ent. Soc. Lond. April 1860. 
, Hewitson, Exot. Butt. Agr. f. 1, 2. 
Ega, Upper Amazons; very rare. I took both sexes of this very 
distinct species. The female does not differ in colours from the 
male, and both bear a striking resemblance to Callithea Markit and 
C. Batesvi of the same locality. 
Genus Mretsrants (Boisd.), 
Westwood, in Dbld. & Hewits. Gen. p. 311. 
This genus is the nearest approach found in the New World to 
Charawes of the Old. It differs strikingly in the subcostal neuration 
of the anterior wing. 
154. Megistanis Beotus (Boisd.), Westwood. 
Megistanis Beotus, Westwood, in Dbldy. & Hewits. Gen. pl. 48. f. 2. 
Very abundant on the Upper Amazons, from Ega westward to the 
slopes of the Andes. It makes its appearance at the commencement 
of the dry season in June, on fine days flying in numbers about the 
moist sediment left by the retreating waters of the river. Its flight 
is excessively rapid and wild, and when settled it is very wary and 
difficult to approach. 
155. Megistams Deucalion, Bates. 
Megistanis Deucalion (Bates), Felder, Lepid. Fragmente, p. 58. 
This species is the constant companion of M. Beotus on the Upper 
Amazons, occurring in the same places and in the same abundance. 
I think there can be no doubt of its being a distinct species. The 
females of both are unknown ; but this is scarcely a matter for sur- 
prise, as the same is the case with many species of Catagramma and 
other genera of similar modes of life. 
Genus Hypna (Hiibner), 
Westwood, in Dbld. & Hewits. Gen. p. 314. 
156. Hypna Clytemnestra, Cramer. 
Papilio Clytemnestra, Cramer, 137 a, B (1779). 
, Fabr. Sp. Ins. ii. 93. 406 (1781). 
Generally distributed throughout the Amazons valley. It flies on 
the borders of the forest, settling on projecting branches of trees. 
