31 



Ab. gelida Gnen. Like ab. groenlandica, but smaller 

 (33 mm. ; 35 mm.). 



4027 Iceland, bred from pupa, 1878 (Staudinger). 



Greyish-brown, with a distinct transverse band between 



the stigmata (42 mm.). 

 4026 Iceland, bred from pupa, 1876 (Staudinger). 



Ab. groenlandica Dup. Greyish-brown, powdered 



with white, but otherwise as the type (43 mm.). 



6505 Iceland, 1887 (Staudinger). 



Ab. poli Giten. Small (34 mm.) ; stigmata distinct ; a 

 series of white dots on the nervures before the sub- 

 terminal line. 



6506 Iceland, 1887 (Staudinger). 



Small (33 mm.) ; dark brown ; markings indistinct. 



4028 Iceland, bred from pupa, 1878 (Staudinger). 



Very rich dark reddish-brown ; nervures whitish to 

 beyond the reniform ; stigmata distinct and outlined 

 in whitish (38 mm.). 



4029 Iceland, bred from pupa, 1878 (Staudinger). 



As the preceding, but the nervures and stigmata only 

 just distinguishable ; reniform stigma filled in 

 with reddish .(39 mm.). 



6507 Labrador, 1887 (Staudinger). "\ 



6508 „ „ „ / 



Type form : brownish-grey ; an indistinct central dark 

 band ; stigmata fairly distinct ; a row of dark brown 

 wedge-shaped soots before the hind margin (40 mm.). 



6591 Shetland, 1888 (Salvage). \ 



5366 Unst, vii. 1883 (McArthur). j 



Large (48 mm. ; 42 mm.), and strongly marked with 

 transverse yellow lines and bands. Cf. ' Entomolo- 

 gist,' 1884, Plate I, figs. 5, 6, 7, and South, I. PI. 123, 



6590 Shetland, 1888 (Salvage). ] [figs, i, 4. 



5485 Rannoch, 1883 (Clark). [ 



5484 „ „ „ I 



Ab. assimilis Doubl. Rich dark brown, with lighter 

 transverse lines, and stigmata outlined in pale brown. 

 (46 mm. ; 44 mm. ; 42 mm.). Cf. ' Entomologist,' 

 1884, Plate I, fig. 4, and South, I. PI. 123, fig. 3. 



