1922] Frost — A New Species of New England Coleoptera 
5 
There seems to be little variation in the 13 males and 8 females 
from Belmont, Mass., or in the two males and four females from 
Mt. Desert Island, Me. One of the females has the elytra 
distinctly darker and in another the occipital spot is obsolete. 
The dark portions of the 5th and 6th abdominal segments show 
a tendency to vanish on the median line behind and almost 
disappear in some of the males. 
This species belongs near rotundicollis but can easily be dis- 
tinguished by the color, orbicular thorax and sculpture of the 
elytra. Specimens of both these species were sent to Dr. Horn 
of Berlin, Germany, who writes that they are distinct from known 
European forms although the present species slightly resembles 
obscura L. 
The species was first brought to my attention by a specimen 
in some material sent me in the summer of 1920 by Mr. C. S 
Anderson to whom the species is dedicated. On May 28 he took 
50 specimens at Belmont, Mass. May 18, 1921, a few specimens 
were seen and on May 20 he made a special visit there without 
success. On May 22 he found them present in great numbers 
on Japanese barberry, and also in lesser numbers on grasses and 
other plants; 72 were taken, and 50 more on the 25th. The 
owner of the estate said they had first been noticed in 1918 but 
in much less numbers. A few scattered specimens were noticed 
in Arlington in June and July. Mr. G. C. Wheeler took two 
specimens in Forest Hills on English elms. Mr. C. W. Johnson 
took one specimen on July 18, 1919 at Jordan’s Pond on Mt. 
Desert Island, Me., and on June 7 and 8, 1921 he found it very 
common around hedges and on fences at Bar Harbor on the 
Island. 
Like the parallel case of C. neglectus Fall (which is, however, 
much less strikingly differentiated from its congener carolinus 
with which it was undoubtedly confused) we have here a still 
stranger and more sudden appearance in numbers of an undes- 
cribed species of this genus in these comparatively well-collected 
regions. It would seem to have been extremely rare or local to 
have escaped the notice of Dr. Harris, Frederick Blanchard 
