212 THE MOTHS OF THE BRITISH ISLES. 



be disturbed from the branches of such trees, or from hedge- 

 rows, etc. 



In Britain the species seems to have been first noted in Castle 

 Eden Dene, Durham (1825), and subsequently in Cumberland 

 (Flimby, near Maryport), Westmorland, Lancashire (Arnside 

 and Silverdale), Yorkshire (Scarborough), Derbyshire (Dove- 

 dale), Arthog in North Wales, and Tintern in Monmouthshire. 

 The only English localities for it south of Monmouth are Waters- 

 meet, near Lynton, in North Devon, and Torbay, in South 

 Devon. It has been noted from Rannoch and Pitlochrie, in 

 Perthshire, and from Dalmallin, in Argyllshire. It has a wide 

 distribution in Ireland, and is common in some parts of that 

 country, as at Killarney, Co. Kerry, and Rockwood, in Sligo. 



Abroad, the range extends to Amurland ; it is represented in 

 Japan hy fiilvida, Butler, and in North America by basaliata, 

 Walker. 



Yellow Shell {Camptogramma bilineatd). 



This very common and generally distributed species is subject 

 to a good deal of variation in the tint of ground colour, and also 

 in the greater or lesser amount of black marking. On Plate 85 

 six specimens are shown ; Figs. 4, 5 represent the more fre- 

 quent form in most localities, but in many districts ab. iiifics- 

 cata, Gumppenberg (Fig. 6), is hardly less common ; in some 

 specimens the central band is entirely blackish, and occasion- 

 ally the middle area of the band is partly or wholly whitish. 

 Sometimes the wings are uniformly yellow without markings, 

 but such aberrations are scarce, or have not been noted often. 

 A small form occurring in the Hebrides and the Shetlands, var. 

 atlantica, Stand., has the wings generally darkened ; Figs. 

 7-9 depict three specimens from the Isle of Lewis. Portraits 

 of two very local Irish forms will be found on Plate 61 ; one 



