ADDITIONS AND CORRECTIONS. 257* 



AiiCTiA AMERICANA. Great .■hncricuii Tigtr-moth. 



Male. Iiiick ol' the antenna' white, tipped with hruwn ; jiectina hrnMn. Head and thorax 

 hiuwu, covered with lung hairs : front, at tlie base of tlic hair>, urnaiuented with a 

 white liand, surmounted with a crest of hairs trimmed with crimson, and which 

 extends around the thoracic part. Forewings bufl-brown : base of the wings marked 

 with white branching spots, which resemble somewhat a cross : wing beyond the 

 middle also marked with a white irregular cross something like an X, extending 

 entirely acruss t!ie wing, excipt to that portion which is directed towards the apex : 

 anterior margin hiis two white spots, a large and a small, lietweeii the two cnsses : 

 inner margin has an oblong patch of brown parallel with its edge. Hindwings orange, 

 marked with three round lilue-black spots ; between them is a lunule : on the under 

 side, the margin has two brown patches. Abdomen orange, marked in the middle with 

 tour transverse lines ; beneath brown, except at the extremity. Thighs crimson ; legs 

 brown. 

 In the female the markings resemble the male, Imt the white is more conspicuous. 

 Expanse of wing of the female, 2.^ inches. 

 Captured near Albany. 



This moth closely resembles the English Caja, or Great Tiger-moth. It is rare in New- 

 York, or rather but few have been taken to my knowledge. Dr. Harris received a speci- 

 men from Trenton-falls, of which he has given a description in his Treatise on Insects, 

 p. -207. 18.V2. It is easily distinguished from all our moths by its peculiar markings. 



