109 



And beyond this again, and equidistant from it, from each other, and 

 from the apex of the wing, there is on the costa a pair of short white 

 streaks, the inner one much the shorter of the two. Thus along the costa we 

 have a series of seven very conspicuous short white streaks, arranged 2, 2 and 

 3. The terminal i/4 of the front wing is mostly rust-red, with a series of 

 abbreviated, black, longitudinal lines, springing from the outer edge of the 

 curved prolongation of the inner one of the 2d pair of streaks on the costa; 

 and beyond these short black lines are two very oblique, shorty pale steel-blue 

 streaks, one springing from the posterior angle and the other a little above it 

 from the outer margin. Disk of the front wing rust-red, with many indis- 

 tinct, short, black, longitudinal lines, and on its centre the pale steel-blue 

 blotch already referred to. On tlie middle of the inner margin, a large, 

 elongate-triangular, rust-red patch, the apex of the triangle directed towards 

 the apex of the wing and attaining the disk, the base of the triangle occupy- 

 ing nearly ^4 of the inner inargin. This triangular patch is bisected length- 

 ways by a very elongate and slender black triangle, the apex of which attains 

 its apex; and the rust-red space on each side of this last triangle is again 

 indistinctly bisected lengthways by a still more elongate triangle composed 

 of confluent black atoms. Fringe dusky, with a black basal line all along it. 

 Hind 'wing dusky-gray at base, shading into black at tijj. On the middle of 

 the outer margin, in the male Init not in the female, an elongate semi-oval 

 patch (fig. 3a) of metallic-brassy scales, brighter in certain lights. Fringe 

 of the male (fig. 3a) long, sparse and grayish- white on its anal ^, 

 short, dense and dusky with a basal black line for its remaining %. Fringe 

 of the female (fig. 3) nearly of uniform length, coarse and dusky throughout 

 on the % next the wing, then suddenly fine and grayish-white on its outer 

 %• Body brown black. Face and palpi grayish-white. Shoulder-covers 

 largely tipped with dullrust-red. Tips of the abdominal joints pale fuscous 

 abov(.'. Legs dusky. All beneath, including the legs, with a more or less 

 obvious silvery-white reflection. 



Described from 13 specimens, (4 males, 9 females) bred from infested 

 plums August 23d — September 15th. The males were readily distinguished 

 by the exserted anal forceps. Three specimens bred from Black-knot, Aug. 

 31 — Sept. 7th, three others bred from the Elm-Gall {Ulmicola, Fitch) Julv 

 26th — Aug. 5th, and a single one bred from the Oak-Gail (Q. singularis, Bas- 

 sett) on Sept. 2d, none of them differed from the plum-fed specimens in any 

 important point. I sent a single s])ecimen, bred from the Black-knot, to the 

 late Dr. B. Clemens, about a year before his lamented death : but he never, so 

 far as I know, investigated its classification. For the satisfaction of the in- 

 credulous, I may add that I sent specimens, bred respectively from the Plum 

 and the Elm-gall, to the distinguished English Entomologist, H. T. Stainton, 

 who is well known to have made the smaller moths his special study for 

 years; and that he agrees with me that they are "perfectly identical." It 

 is to the kindness of this gentleman that I am indebted for the generic deter- 

 mination of this species, and for the following very valuable comparison of it 

 with the European species (*S'. janthinana) which, as he informs me, is the 

 most closely allied to it. The small European moth {Opadia funebrana, 

 Treitschke), which I quoted in the Practical Entomologist (II. p. 79) as occa- 

 sionally boring into plums in England, has been referred, as Mr. Stainton 

 informs me, both by himself and by Wi'lkinson to the same genus to which 



