THE CANADIAN ENTOMOLOGIST. 139 



oblique. They are an entirely independent ornamentation to the lines, 

 s;)ots, etc., in above general description. Cilia same as ground colour, 

 tinged with fuscous, and bordered on the inner side by a thin brighter line. 

 Hind wing very pale ash gray, with a reticulated effect on the outer half, 

 and especially the apical third, caused by a series of parallel brownish 

 fuscous lines, broken into short dashes. Cilia long, concolorous. Under 

 side, fore wing shining fuscous, with the lines and dots of upper side 

 repealed by darker fuscous. On the inner half of costa are several 

 oblique dark fuscous dashes. Cilia concolorous, shading into brown at 

 extreme edge and apex. Under side, hind wing same as upper side. 

 Abdomen fuscous. Legs fuscous, annulated with dark fuscous on last 

 joint. 



The type described above is like the majority of the specimens 

 before me. Two extremes may be noted. 



In one, A, the costal patch is so heavily overlaid with nearly black, 

 slate-coloured scales, that the ground colour is entirely hidden, except a 

 line along the costa, and a small enlargement of this line in the middle of 

 the patch. 



In another, B, the general colour is lighter all over, with barely a trace 

 of the dark slate scales in the patch. In this specimen the wave-like lines 

 of the ground colour are not nearly so well defined, but the lighter and 

 darker scales are broken up into small patches ; one is particularly well 

 marked, near base on dorsum, and surrounding the large dot of black 

 raised scales. 



The general appearance of all specimens is much the same, these 

 differences only becoming prominent through a lens. Alar exp., 17 to 19 

 mm. 



This species is close to the European Acleris aspersana, Hbn., but is 

 quite distinct, especially larger average size, pair of basal lines absent in 

 aspersana, and hind wings of latter are evenly smoky fuscous, no lines or 

 reticulations. 



Described from 23 specimens, 16 from Kaslo, B. C, collected by Dr. 

 Dyar, also bred by him on rose, and 6 specimens collected by Dr. Taylor 

 and one by Theo. Bryant in the vicinity of Wellington and Victoria, B. C. 

 I have also seen one specimen in the Museum of Comp. Anat., Cambridge, 

 labelled " B. C," and I have so named it after British Columbia. 



Larva taken July 21. Moths emerged and dates of capture, July 31 

 (Bryant), Aug. 20 (Taylor), and Sept. 5 (Dyar). 



