242 LEPIDOPTERA OF NORTH AMERICA. 



narrow black bands across the forepart of the thorax. Wings ex- 

 pand one and a quarter to one and a half inches. 



Larva. The top of the fourth riug rises in the form of a long 

 horn, sloping forwards a little ; the tail, with the hindmost feet, 

 which are rather longer than the others, is always raised when the 

 larva is at rest, but it generally uses these legs in walking; head 

 large, brown; sides of the second and third ring, green; rest of the 

 body brown, variegated with white on the back a few short hairs 

 hardly visible. 



United States. 



HARRIS. 



2. B. concinna Sm. Abbott. Figured in Sm. Abb. pi. 85. 



Color, light brown; forewings dark brown along the inner mar- 

 gin are more or less tinged with gray before; a dark brown dot 

 near the middle, a spot of the same color near each angle, a very 

 small triangular whitish spot near the shoulders, and several dark 

 brown longitudinal streaks on the outer hind margin ; the hind 

 wings of the male are brownish or dirty white, with a brown spot 

 on the inner hind angle ; those of the female are dusky brown ; 

 body light brown, with the thorax rather darker. Expands from 

 one to one and three-eighth inch. 



Larva. Yellowish brown, paler on the sides, striped with 

 slender black lines ; head red ; on the top of the fourth ring there 

 is a hump, also red ; along the back, several short black prickles ; 

 hinder extremity tapering, and is always elevated at an angle with 

 the rest of the body, when not crawling. 



United States. 



HARRIS, 



3. E. albifrons Sm. Abb. Figured in Sm. Abb. pi. 80. 



Male. Hoary. Palpi brown above. Thorax with a tawny band 

 near the fore border. Forewings with various small brown marks, 

 white along the costa for half the length from the tips ; the outline 

 of this white part is very irregular, and the adjoining part of the 

 wing behind it is dark brown ; a row of short undulating blackish 

 streaks along the exterior border. Length of the body six lines, 

 of the wings fifteen lines. 



Female. Cinereous. Fore wings thinly covered with black 

 flecks ; a brown zigzag band at a little before one-third- of the 

 length, and extending from the costa to rather beyond half the 

 breadth of the wing ; a large white patch on the fore half of the 



