Vol. xxiii] ENTOMOLOGICAL NEWS 5 



number of points that are decidedly at variance with Boisdu- 

 val's description. We have in our combined collections 149 

 specimens of dmnctorum, collected at Santa Barbara, Newhall, 

 Burbank, Los Angeles and vicinity, Pasadena and vicinity, and 

 San Diego. Air. Newcomer, of Palo Alto, has also kindly writ- 

 ten us concerning the spots on twenty-nine specimens in his 

 collection, taken at Palo Alto, San Luis Obispo and Lake Ta- 

 hoe. Also, Mr. Grinnell fortunately has three good specimens 

 of rnbi, from England, in his collection. 



Our 149 specimens, when assembled for study, were found 

 to consist of no $ and 39 $. When these were separated 

 and arranged in convenient rows, the first thing noticed was 

 the great variation in general appearance between the fresh 

 and the worn specimens. This was particularly noticeable 

 with regard to the upper surface color, fringes, denticulations 

 and general outline. We therefore divided the set about 

 equally into good and poor series and have used the good set 

 to draw up a new description of dwtnetorum. 



T. dumetorum. Expanse 25-30 mm. $ above uniformly plumbeous 

 without the decided fuscous tint of rubi. Under a certain glancing 

 light a brownish luster can be noticed. 9 above the centers of both 

 wings reddish fulvous, surrounded by the plumbeous color of the $ . 

 This fulvous varies greatly in different specimens, being predominant 

 in some and slight in others. All the 9 , however, have it to some 

 degree, while all the $ have a noticeably different, uniform plumbeous 

 color. On the best specimens a pale gray or whitish fringe is notice- 

 able, being especially clear and broad towards the rear of secondaries. 

 The denticulations and anal palettes are as clearly defined as in the 

 European T. rubi. 1 



On under side the prevailing color is a bright metallic green but the 

 posterior part of the primaries is broadly tan color, shading to gray 

 towards the inner margin. With the wings closely folded the sec- 

 ondaries nearly cover the tan and gray of the primaries so that the 

 insect appears to be uniformly bright green on under side. 2 



1 These latter features are naturally not so noticeable on worn or 

 even slightly worn specimens, as the edges of the wings wear out 

 rapidly. This would easily account for Boisduval's exceptions on these 

 points. 



2 In T. rubi the green covers fully two-thirds of the surface of the 

 primaries, leaving a comparatively narrow strip of tan and gray along 

 the inner margin. 



