THE CANADIAN ENTOMOLOGIST. 163 



genus must be created for it ; and I am averse to the multiplication of 

 genera on smill differences. And if this insect is properly placed in Litho- 

 colletls, then Leucanthiza only differs from Lithocottetis in the neuration of 

 the wings and but little in that. 



The tongue is yellowish : palpi silvery white. Face, under surface and 

 legs, silvery white, opalescent or purplish, according to the light. The 

 legs are marked with golden brown on their anterior surfaces. Antennae 

 brown, opalescent in some lights. Tuft, thorax, and base of the wings, 

 maroon, opalescent or golden, according to the light, more golden towards 

 the dorsal margin of the wing, and brownish towards the costa, passing at 

 about the basal ^ into a dark maroon band, which forms the dark 

 internal margin of the first silver-white fascia ; behind this fascia, the wing 

 is pale golden, passing into deep golden, then brownish golden, and into 

 the deep maroon internal margin of the second silvery-white fascia which 

 is placed about the middle of the wing ; then the same succession of 

 colours to the third fascia, which is slightly intercepted in the middle ; 

 then the same succession of colours to a costal white streak at the base of 

 the ciliae, and an apposite dorsal one ; these streaks are also faintly dark 

 margined on the apical side. Apical portion of the wing bright golden, 

 ciliae silvery, with a wide maroon-brown hinder-marginal line at the base. 

 The golden portions of the wing vary with the light from golden to a red 

 saffron, suffused with purple or brown, and the fasciae are white, silvery, 

 or steel-gray. The cocoon is yellow. The larva is that described by Dr. 

 Fitch as the larva of his Anacampsis robiniella. The mine is flat, yellowish, 

 and upon either side of the leaflet of the Locust (Robinia pscudacacia), and 

 the Rose acacia (R. hispida). Alar. ex. % inch. Common in Kentucky. 

 (L. robinie/la also feeds on R. hispida). 



28. L. Salicifoliella. 



In Proc. Ent. Soc. Phi/a., VI., p. yy and p. 81, Dr. Clemens applies this 

 name to a species which was known to him only by its mine, which, he 

 says, is "near the base along the edge"' of the leaves of the yellow willow 

 (Salix Alba), and the mines were empty. He found the mines in* the 

 latter part of July. Dr. Packard mentions the species ( Guide, p. 333) on 

 the authority of Dr. Clemens. But the insect remains unknown unless 

 that presently described is the same, as I believe it to be. I have two 

 specimens, differing slightly from each other, as noted below, but which I 

 have no doubt are of the same species. One was bred from a mine on 

 the underside of a leaf of the Weeping Willow (S. Babylonica) ; the 



