The Scottish Naturalist. 137 



times obsolete or absent). The wings are folded round the 

 body when the insect is at rest. 



A. — Argyroteuchia H.— Tip of front wing produced. 

 Apical cilia paler than the wing, and bordered inwardly by a distinct dark 

 line. Cilia either altogether metallic, or with, a shining part beloio the middle of 

 the hind-margin, which is there rounded, and marked with {generally conspicuous) 

 marginal spots. The hind line, angulated or interrupted above* and usually 

 shining or silvery, and margined with darker, starts obliquely from the casta. 

 Most of the species are adorned with pearly-white or white longitudinal streaks. 



a J The dark apical marginal line double. Cilia below 

 middle of hind-margin shining. Bind line angulated on the fold. The cen- 

 tral line divides the wing in the middle. 



ALPINELLTTS H.-F.-w. (with tip very much produced) ashy- 

 brown, with a central longitudinal white streak, extending from 

 the base to the hind-margin and continued in the cilia. The 

 central line, brown, angulated very acutely above and more 

 slightly on the fold, intersects the white streak. The hind 

 line, dull whitish margined inwardly with brown, angulated very 

 acutely above and more slightly on the fold, touches the hind- 

 margin, and is interrupted there. Cilia metallic below the mid- 

 dle. H.-w. grey. 8-9 L. 



July, .August. Taken by Mr. Moncreaff, (to whom I am indebted for speci- 

 mens), near Southsea. It occurs in sandy grassy places (especially in fir- 

 woods) in France (S.W.), Germany, Hungary, Switzerland, and Livonia. It 

 is not a mountain species, as the name would imply. 



CEKTTSELliUS Schiff. s. V.-F.-w. (with tip only slightly pro- 

 duced) brown in the male, greyish-white dusted with brown 

 in the female. The two lines (grey margined with yellowish- 

 brown in the male, white margined with yellowish-ochreous in 

 the female), acutely angulated above, and the hind one also, 

 but more slightly, on the fold. Cilia metallic. H.-w. greyish- 

 brown. 6-6^2 L. 



June. Central and Southern Europe. In Britain as far north as Lancashire. 



bj Apical marginal line simple, margined outwardly with 

 white. Cilia metallic. Hind-margin with dark spots below the middle. Bind 

 line silvery, angulated above. Central streak pearly-ichite or white. Central 

 line obsolete. 



1. Central streak entire. The sj)ace between it and the 

 casta, of the ground colour. 



* "Above" means at the upper part of the line, i.e., nearer to the costa than to the 

 inner-margin. 



