THE CANADIAN ENTOMOLOGIST 353 



pale ashen without lines, except the irregular scalloped marginal 

 lines and black, twin spots. Hind wings somewhat semi-diapha- 

 nous, shaded with fuscous, with a pale extradiscal line basally. 

 The females are of the same size and general appearance but 

 the central band is lighter, being of about the same colour as in 

 var. californiata Pack., sometimes with a yellowish tinge. Outer 

 border light ashen, a little paler than the normal form, lines faintly 

 discernible. I believe that a form corresponding to this is repre- 

 sented in the other allied Cidarias. 



Holotype.— d", Victoria, B. C, Aug. 1, 1915, E. H. Blackmore; 

 in my collection, received through the kindness of Mr. Blackmore. 



Allotype. — 9, Victoria, B C, Sept. 9, 1914; in collection 

 of E. H. Blackmore. 



Paratypes.—S c^'s 1 9 , Victoria, B. C, Aug. 26 to Sept. 25, 

 1913 and 1914, in collection of E. H. Blackmore; also 1 cT 1 9 

 from same locality. Sept. 5 to 25, 1913 and 1914, in my collection. 

 This form is easily distinguished by its small size, lack of mark- 

 ings and narrow median band besides the other points enumerated. 

 Xanthorhoe defensaria Gn., var. gigantaria, var nov. 



Under this name I propose to describe the typical early 

 spring form, which may be easily recognized by its large size, 

 heavy markings and wide bands. 



Expanse 27-31 mm. The male has the general appearance 

 of the male of the smaller summer form but differs in the fol- 

 lowing points: — Size much larger; median bands broader 

 and heavier; basal line black or dark brown and very 

 wide, in fact so wide that it generally merges with some part 

 of the extradiscal line and gives somewhat the appearance of a 

 more or less suffused median band. In the normal defensaria 

 the basal band appears to start, as a rule, below the costa, but 

 in the present variety it runs from costa to inner margin. The 

 cf holotype has no lines on the outer border, merely a few black 

 points on the veins. There is the usual irregular marginal white 

 line, beyond which the outer margin is dark. In some of the other 

 specimens, however, the outer border varies from the normal 

 gray, with many wavy lines, to a slightly yellowish shade; but the 

 latter is uncommon. 



The female is as large and as striking as the male, the median 



