138 THE CANADIAN ENTOMOLOGIST. 



the species is Subhyalina. All these examples are remarkably transpar- 

 ent, and on the disk of forewings beneath there is almost a total absence 

 of dark or mottled scales. But, at the apices there is decided mottling, 

 the light colour prevailing. Some, however, have fine brown scales in the 

 upper interspaces as well as over the cell. One male has two light sub- 

 apical dots on upper side, though without black .centres, the others show 

 no trace of these. On the under side of the hind wing all these examples 

 agree with the description, and are spotted and mottled with black and 

 dirty white. In respect to the band there is extreme variation, some 

 being quite unbanded, though in these the disk is more or less clouded 

 darker ; others have a pale band. One male and the female show an 

 indistinct outer edge of the band, which answers to the description, " a 

 waved and curved pale line "; and .two males present the band clearly 

 defined on the posterior side, and nearly so on the basal \ but the band is, 

 after all, scarcely more than a shadow, nothing so distinct as is usual in 

 the allied species. As to whitish dots on the margins, three males and 

 one female have them, the rest do not. 



Mr. Butler gives " Arctic America " as the locality of this species, but 

 I know of no other than Laggan. • 



I shall give a plate in Butt. N. A. to Subhyalina presently. 



ADDENDUM. 



After I had sent the foregoing lines to the editor I received two more 

 females of the species treated of, from Dr. Skinner, from Laggan like the 

 rest. One of these in no way seems to differ from the female before 

 described ; but the other varies in that half way between the outer edge of 

 the band and the margin, on four interspaces, in the middle of each — the 

 lower subcostal to second median, is a small whitish spot, clearly defined 

 on the two lower interspaces, diffused on the others. This character 

 agrees completely with the description by Curtis as to " three or four 

 whitish dots beyond " the middle of the wing. I find therefore in one or 

 other of the twelve examples viewed, every one of Curtis's characters 

 except black points in the apical spots. But in only one of the twelve is 

 there any appearance of apical dots on upper surface and in only 

 one whitish dots beyond the band. The same female which 

 offers the dots beyond the middle differs from the other eleven, in 

 having a row of whitish dots on the corresponding interspaces of the 

 forewing, two fifths the distance from the margin to apex of the cell, in 

 a straight line, not parallel therefore to the margin. All three of these 



