ADDITIONS AND CORRECTIONS. 257* 



Arctia Americana. Great American Tiger-moth. 



Mall. Back of the antenna; white, tipped with brown ; pectina brown. Head and thorax 

 brown, covered with long hairs : front, at the base of the hairs, ornamented with a 

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

 extends around the thoracic part. Forewings buff-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 across the wing, except to that portion which is directed towards the apex : 

 anterior margin has two white spots, a large and a small, between the two crosses : 

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

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

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

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

 brown. 

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

 Expanse of wing of the female, 2 A inches. 

 I iptured 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. -Ihl. 1S52. It is easily distinguished from all our moths by its peculiar markings. 



