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 distinctly darker and in another the occipital spot is obsolete.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. negledus 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 



