222 THE CANADIAN ENTOMOLOGIST. 



the tufts glow with crimson and purple hues, and the ochreous patches 

 assume the form of indefinite wide bands. There is an oblique costal 

 streak of rather dense white dusting before the apex, and an opposite 

 dorsal one. Three dark brown hinder marginal lines, one at the base 

 of the ciliae, the second before the apex, and the third at the apex, 

 of the ciliae. Dorsal ciliae dark slate-colour, with eight or ten dis- 

 tinct white specks near t/ie base. Posterior wings and ciliae slate-colour. 

 Abdomen slate-colour, with crimson and purplish reflections. But the 

 colours of the entire insect vary somewhat with the direction of the light. 

 Alar ex. about yj> inch. Common. Kentucky. 



The larva mines the leaves of the Button Bush ( ' Cephalanthus occiden- 

 ialis). I found them early in October, and a few days afterwards, they 

 became pupae, and within a week thereafter, produced the imago. It 

 pupates on the ground, and the imago most probably hybernates. 



The mine and larva resemble those of the genus Antispi/a, but the 

 larva is reddish. 



This is the only Laverna that I have found, and is a very handsome 



insect. 



aspidiscAj Clemens. 



Head smooth, with appressed scales. Tongue naked, short. Labial 

 palpi short, much separated. Antennae about one half as long as the 

 wings. Size, very small. 



(This brief, generic diagnosis is condensed from Dr. Clemens' account 

 published in the Proc. Acad. Nat. Sci. Pliila., i860, v. 11., corrected at 

 p. 200. Dr. Clemens errs, however, in the statement that there are no 

 maxillary palpi. They are not visible without dissection, but upon dis- 

 section, minute one-jointed palpi are perceptible). 



The larvae are cylindrical, depressed ; head smaller than the first 

 segment. No true legs nor prolegs, but in their places, and also on some 

 of the other segments, are what appear to be discs, which act as suckers. 

 It is doubtful, however, if they do so act, as they appear on the dorsal as 

 well as ventral surfaces. They are miners through their whole larval 

 existence, and when ready to pupate, they cut out a minute case, and, 

 sewing together the edges, let themselves down by a thread, and, notwith- 

 standing their apparent want of means of locomotion, they manage to 

 transport themselves and their cases frequently through long grass, or over 

 seemingly impracticable routes, for many rods, before spinning the silken 

 " byssus," by which the case is attached to a tree, or fence, or blade of 

 grass, for the pupal repose. 



