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 dumetorum, collected at Santa Barbara, Newhall, 
Burbank, Los Angeles and vicinity, Pasadena and vicinity, and 
San Diego. Mr. 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 rubi, from England, in his collection. 
Our 149 specimens, when assembled for study, were found 
to consist of 110 6 and 39 9. 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 dwmetorum. 
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. @ 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 2, 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 J. rubi.* 
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.” 
*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. 
?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. 
