NORTH AMERICAN LEPIDOPTERA. 131 



As they grow larger they draw about the openings of their abodes 

 many partially eaten leaves, so that by autumn there is quite a 

 bunch about each case. At the approach of cold weather the cases 

 are attached to the twigs by means of silken threads, the larvae fre- 

 quently gnawing away the bark to insure a firm hold ; and thus the 

 wintei" is passed. As soon in spring as the leaves begin to appear, 

 the larvfe attack them, frequently eating out the flower buds as well. 

 They continue feeding and gnawing until some time in June, when 

 they become pupae. About a fortnight later the moths emerge, and 

 thus the life cycle is completed. The larv?e, it appears, feeds habit- 

 ually upon the Apple, Quince, possibly the Peach, and on both the 

 wild, and cultivated varieties of the Cherry, Plum and Crab-apple. 

 It has been found in New England, Canada, New York, Illinois, 

 Iowa, Kansas and Texas, so that it probably covers the whole country 

 east of the plains. It is very destructive to orchards in the Western 

 States." 



Var. iiebulella Riley, Eep. Ins. Mo. iv, 41. 



This differs in the more uniform and subdued tone of the fore- 

 wings, the markings being more suffused and indistinct, but princi- 

 pally in the relative narrowness of the space outside the transverse 

 ])osterior line, the greater consequent width of the middle field, and 

 the smallness of the triangular broAvn spot, the space it occu[)ies on 

 the inner margin being scarcely one-half as wide as that between it 

 and the transverse posterior line. The discal spots are also sepa- 

 rated. Bred from Wild Crab ( Crataegus). 



I have specimens in which the brown triangle is obsolete. This 

 name may stand for the variations which comparatively lack this 

 spot, and as well all reddish color on the fore wings. 



6. M. jUglaiKlis Le Baron, Ins. 111. ii, 123, 1872 (Phycita); Kiley, Ins. Mo. 

 iv, 73, 1872; French, 111. Rep. vii, 249, 1876; Packard, Ins. inj. shade trees, p. 82, 



1881. 



The description of indlgenella Zell. will answer very well for this 

 insect. The imaginal differences as they exist in some specimens 

 Prof. Riley sums up as follows : " It is distinguished as follows : first, 

 by the paler basal area of the front wings, which is sometimes almost 

 white, especially near the costa, and by the head and shoulders and 

 sometimes the antennal horn j)artaking of this paler color; secondly, 

 by the darker median space, the dark triangular costal spot not being 

 well relieved posteriorly, but extending so as sometimes to darken 



