198 THE CAXADIAX EXTOMOLOGIST. 



It is much smaller than any of the previously described species of this 

 country, measuring only i''',j of an inch alar cx.^ whilst coniifoliella is larger 

 ]^, Isabella a little larger still, and Vlticordifoliclla is scant Y^. But it 

 differs still more decidedly by having an almost lunate, rather large snow- 

 white streak extending along the base of the dorsal ciliae nearly to the 

 apex. 



The distinctions between the described American species are as 

 follows : The fascia and dorsal spot in Isabella are wider than in conii- 

 foliella. Isabella has the palpi v/hite and the anterior feet yellowish, with 

 brown annulations. Dr. Clemens is in error when he says that it is without 

 violet and greenish reflections ; I find it shows them about as in coi-ni- 

 foliella. In all the species I should call the fascia silvery rather than 

 golden, though it certainly is tinged with golden. Isabella has the antennae 

 brown, with faint purplish reflections in some lights ; the basal joint is 

 pale ochreous yellow, but the terminal joint is of the general hue. In_ 

 cornifoliella the stalk appears a little darker, and the terminal joint is 

 white. The head in Isabella can scarcely be said to be golden, as Dr. 

 Clemens describes it, but has metallic hues ; it appears to be like the 

 fascia, silvery tinged with golden, though in some lights it appears to be 

 brown. I have not been able to detect any appreciable differences 

 between the fore feet of these two species. The face of eornifoliella is 

 more decidedly brown and less metallic than that of Isabella, and the 

 palpi are somewhat darker. 



The most striking differences are in the size and form of the fascia. 

 Viticordifoliella difTers from both Isabella and coniifoliella in the fascia, 

 which, however, resembles that of Isabella, except that it is narrower on 

 the costa. The costal and dorsal white spots in viticordifoliella are much 

 more nearly regular triangles than in the other two species, in which they 

 approach the trapezoidal form, and the costal spot is relatively smaller 

 than the dorsal and a little further back, but the most striking difference 

 is thc::t the wings of viticordifoliella are more of a dead brown hue, the 

 violet and bronzy green reflections being much less distinct. Its anterior 

 tarsi are silvery white, and the head and palpi silvery tinged with 

 yellowish. Ampelopsiella has the palpi white ; face and head silvery, the 

 face with a blue tinge ; antennae dark purple brown, with the tip white ; 

 fascia much as in coniifoliella ; costal and dorsal spots rather as in viti- 

 cordifoliella, but its most distinguishing mark is the curved white spot or 

 streak along the dorsal cilire. 



