83 



anterior edge of larger joints. Legs reaching only to end of wing- 

 sheaths. The head-prominence varies in size and slightly in form.'' 

 (Fourth Mo. Kep., p. 47.) 



Imago. — Prof. C. H. Fernald has kindly furnished me with the 

 following descriptions, drawn up from the large series of specimens 

 from various localities which he has studied: 



Orange form. — Expanse of wings, from 14 to 20 mm. 



Head, palpi, thorax, and fore wings above, orange-yellow. The 

 fore wings are sprinkled with lead-colored scales which are 

 arranged somewhat in numerous cross lines. The fringes are 

 somewhat lighter in color. The upper side of the hind wings 

 and abdomen are pale fuscous and silky. The fringes and anal 

 tuft are lighter. The under side of the wings and body, as well as 

 the middle and hind legs, are pale yellowish white. The fore legs 

 are orange-yellow in front and pale yellowish-white behind. 



Gray form. — Expanse of wings, the same as the orange form. 



Head, palpi, thorax, and fore wings above, ashy gray with more 

 or less chestnut-red scales mingled. In some specimens the red 

 predominates; in others, the gray; but they intergrade perfectly, so 

 that no separation can be made. Occasionally a specimen will be 

 found with darker scales arranged in cross lines like those of 

 the orange form. A thoracic tuft with a chestnut-colored tip is 

 occasionally found. The fringes of the fore wings are ashy gray, 

 sometimes stained with reddish. The upper side of the hind wings 

 and abdomen are pale fuscous and silky. The fringes and anal 

 tuft are lighter. The under side of the wings is pale yellowish 

 fuscous, the hinder ones being a little lighter, and with a few 

 brownish sprinkles along the costa and outer margin in some ex- 

 amples. The legs and under side of the body are somewhat 

 darker than the wings. 



DISTRIBUTION. 



It is evident that this species is widely distributed, as it has 

 been recorded from Maine, New Jersey, Illinois, Missouri, Nevada, 

 and Texas. It also occurs, no doubt, in many other states between 

 and adjacent to those named. 



LIFE HISTORY. 



^ The breeding notes of this office confirm the surmise that the life 

 history of the species when affecting apple is similar to that of the 

 cranberry-feeding specimens. Some larvae collected upon apple stock 

 in McLean county May 15, 1886, commenced pupating about May 

 22, and t by the 27th two thirds of them had pupated. The first 

 moths emerged June 2, and others continued to come forth until 

 June 7. Another lot of larvae from the same nursery, collected 

 May 21, had mostly pupated, and emerged as moths from the 

 5th to the nth of June. In every instance these moths were of 

 the normal summer orange form. Larvae collected August 0, 1883, 

 on young apple trees in a Marion county nursery, emerged as 

 orange moths on the 20th of the same month. 



