GO THE CANADIAN ENTOMOLOGIST. 



detail, and in that detail the deviation in the former is distinctly 

 in the direction of asteris, which it resembles very closely in these 

 organs. In asteris, as Mr. Pierce expresses it, "the clavus is pro- 

 duced to a small irregular kncjb, spinose." In omissa there is a 

 distinct rounded spinose prominence on the clavus, though it is 

 not similarly produced to a knol). In both my omissa mounts 

 this prominence occupies the same relative position on ilie chuus 

 as it does in Pierce's figure, and the clavus is much the same shape. 

 But in ni\- mount of asteris the cla\us is shortened ofT abruptl\- 

 immediately above the knob. In neither of the mounts of asteroides 

 is there an>thing more than the faintest indication of this promin- 

 ence. Asteris jx)ssesses two cornuti on the vesica, whereas omissa 

 and asteroides possess only one. Superficially, also, the new 

 species resembles asteris in colour and arrangement of shades more 

 closely than does asteroides. 



Copablepharon viridisparsa, sp. no\ . 



Head, thorax and primaries almost white with a 

 very pale tinge of greenish ochreous, most pronounced in 

 the female. The primaries have a slight irroration of 

 grey scales, most numerous in the male, giving them 

 a slightly sordid appearance. The male has a transverse posterior 

 row of minute black points on the veins, very faintly indicated. 

 Secondaries dull white in the male, with slight fuscous shadings 

 and a fuscous central cloud ; in the female a little darker and more 

 shaded, though the central cloud is not as dark as in the male. 

 Abdomen of the general ground colour of the secondaries in both 

 specimens. Beneath dull white, with a dark fuscous cloud on the 

 upper portion of the primaries from the base to the end of the cell, 

 and extending between veins 2 and 5 nearly to the outer margin. 

 This cloud is darkest in the male. Expanse of both specimens 

 45 mm. 



Described from a single pair. The male from Lethbridge. 

 Alta,. July 20th, 1915, at light, by Mr. E. H. Strickland, and 

 loaned to the author by him, and the female taken at Calgary 

 town lights by Mr. T. N. Willing on August 7th, 1902. The d^ 

 type will be placed in the collection of the Dominion Entomological 

 Department at Ottawa, and the 9 type is in the author's collection 

 Both are in fine condition, though the male lacks one antenna. 



