IGS THE CANADIAN ENTOMOLOGIST. 



•costal and dorsal spots in both are of nearly equal size, or the costal one 

 is a little the largest. 



A. viticordifoIieUa. N. sp ? 



Dr. Clemens mentions a mine and larva in grape leaves to which he 

 gives this name, l)ut he was not acquainted with the imago. Though it 

 sometimes happens that more than one species of a genus mines leaves 

 of the same plant, and it is therefore possible that the species described 

 below may not be the same referred to by Clemens, yet from his descrip- 

 tion of the mine and larva, I feel confident that it is, and have therefore 

 given it the name suggested by him. 



Dark brown, inclining to blue black, with a purplish tinge in some 

 lights, and in some lights bronzy brown or greenish ; thorax and base of 

 the wings with pink, purple or topaz red reflections, according to the 

 light. A nearly straight silvery white fascia before the middle of the 

 wings, not constricted on the fold, widest on the dorsal margin, where it 

 is also a little nearer to the base ; a large triangular silvery white dorsal 

 streak just before the beginning of the ciliae, and a smaller one at the 

 beginning of the costal ciliae. Ciliae white. Tarsi yellowish white, each 

 joint tipped in front with dark brown. Face yellowish Avhite ; antennae 

 dark brown, with about six terminal joints silvery white, and the six 

 preceding ones alternately white and dark brown. It is a little smaller 

 than A. corjiifoUcIIa. The mine, larva and case are smaller than those of 

 A. Isabella, and the case is elliptical in shape, whilst in cornifoliella and 

 Isabella it is nearly circular. 



A. anipdopsifoliclla. N. sp. 



This species is ^known only in the larval state, unless the species 

 described, but not named below, may be the same. The mine, larva 

 and case are very small, smaller than any other known species. It mines 

 the leaves of Ainpelopsis qiiinqucfolia, and the mine is elliptical in out- 

 line. I lind that I have mislaid my notes upon the larva. I have never 

 succeeded in breeding it. 



Can not something be done towards determining the original of some 

 cultivated plants by a knowledge of the habits of insects which feed upon 

 them? A great majority of herbivorous insects are doubtless poly- 

 phagous, but many are confined to a single group of plants, and some to 

 a single species. When an insect known to feed only on a single wild 

 species, if found feeding on an allied cultivated plant, is it not a fair 



