244 LEPIDOPTERA OF NORTH AMERICA. 



1. I. inclusa Hiibner. I. anastomosis Sm. Abb. I. americana Har. 



Antennae pectinated in both sexes ; the thorax has an elevated 

 crest in the middle ; tail tufted and turned up at the end in the 

 males ; the fore legs thickly covered with hairs to the end, and are 

 stretched out before the body when at rest ; color brownish-gray ; 

 fore wings faintly tinged with pale lilac, and more or less clouded 

 with rust-red ; they have an irregular row of blackish dots near 

 the outer hind margin, and are crossed by three whitish lines, of 

 which the first nearest the shoulders is broken and widely separated 

 in the middle; the second divides into two branches, one of which 

 goes straight across the wing to the inner margin, and the other 

 passes obliquely till it meets the end of the third line, with which 

 it forms an angle or letter V ; across the middle of the hind wings 

 there is a narrow brownish band, much more distinct beneath than 

 above ; on the top of the thorax there is an oblong chestnut- 

 colored spot, the hairs of which rise upwards behind and form a 

 crest. All the whitish lines on the fore wings are more or less 

 bounded externally with rust-red. It expands from one inch and 



one quarter to one inch and five-eighths. 



Walker. 



2. I. albo sigma Fitch. Fifth Report, p. 64. 



G-rayish-brown ; fore wings crossed by three faint paler streaks, 



the two first parallel, the hind one with its outer half silvery white 



and strongly waved in the shape of the letter S ; width 1.50. 



United States. 



Fitch. 



3. I. van Fitch. Fifth Report, p. 65. 



Similar to inclusa, but darker colored and smaller, with the 

 bands more slender and distinct, and may be readily distinguished 

 from that species by its having the first band not dislocated but in 

 its middle strongly curved backwards, the apex of the curve usually 

 forming an acute point. The last band also is much more strongly 

 undulated near its outer end, curving backwards almost in a semi- 

 circle, and is of a much more vivid white color and broadly bor- 

 dered on its hind side with bright rust-red. Its hind wings also 

 are destitute of the paler band across their middle width about 

 1.20. 



United States. 



Fitch. 



