THE CANADIAN ENTOMOLOGIST 267 



13, 1911, and Sept. 20th, 1914, G. O. Day, and in his collection; 1 female, Slug- 

 gett, V. I., Sept. 24th, 1916, W. Downes, and in his collection. 



The last-named is somewhat damaged, being broken on inner margin of 

 primaries. 



The females vary in depth of colouring on primaries, one of the Quamichan 

 Lake females being very dark, giving the insect a rather slaty-grey appearance. 



I take much pleasure in naming this species after my friend Mr. G. O. Day, 

 who has done much good work in describing the life-histories of many of our 

 western species. 



The following notes, given to me by Mr. Day, on the egg and cocoon of 

 this species are of interest. 



Egg. — -"A female found at rest on Sept. 3rd, 1915, extruded 5 eggs when 

 in the killing tin. The eggs were of a dark olive green, joined together end to 

 end, and thinly covered with hairs from the tail of the parent moth. The hairs 

 appeared to be fastened on by the sticky surface of the egg itself^ — ^sideways and 

 irregularly. The surface of the eggs were pitted all over. The eggs were 

 evidently infertile as they became concave on one side after a few days." 



Cocoon. — "On a former occasion a cocoon was found on an old fence post, 

 a small cavity having been made by the larva and covered by a tough web 

 composed of silk and fragments of excavated wood. The cocoon resembled a 

 blister on the post." 



Geometrid^. 



Eustroma nubilata Pack, form macdunnoughi, form. nov. 



This form differs from typical nubilata in having the ante- and post-median 

 bands and the terminal area on the primaries wholly suffused with dark brown, 

 which is only a degree lighter than the very dark median band. The extra- 

 discal line is faintly shown as a narrow, white line which is more pronounced 

 costally, while the crenulate s. t. line is also picked out in white. 



The secondaries in the male have the basal area whitish, shading into dark 

 fuscous from the extra-discal line outwardly, becoming deeper towards the 

 margin, while in the female they are wholly sufifused with brown, the suffusion 

 being somewhat paler basally. It flies with typical nuhilata and although not 

 common, it occurs regularly every season. Named in honour of Dr. J. H. 

 McDunnough, to whom I am deeply indebted for his kindly help and advice 

 in my efforts to straighten out our British Columbia Lepidoptera. 



Altar expanse. — Male 30-32 mm. Female 33-36 mm. 



Described from 12 specimens, 8 males and 4 females, taken on Vancouver 

 Island and the Lower Fraser \'alley. 



Holotype. — cf , Rosedale, B. C., June 19th, 1917, taken by the author and 

 in his collection. 



Allotype. — 9 , Rosedale, B. C, June 23rd, 1917, taken by the author and 

 in his collection. 



Paratypes. — 4 cf 's, Goldstream, B. C., May 18th, 191.5; \'ancouver, B. C., 

 June 18th, 1917; Rosedale, B. C, June 23rd, 27th, 1917, taken by the author 

 and in his collection; 1 cf, Vancouver, B. C., May 7th, 190.5, R. V. Harve5% 

 and now in the author's collection; 1 cf, Chilliwack, B.C., June 26th, 1918, 

 W. B. Anderson, and in his collection; 1 &, Fraser Mills, B. C, July 20th, 1920, 



