THE CANADIAN ENTOMOLOGIST. 245 



NEW SPECIES OF COLEOPTERA OF THE GENUS AGRILUS. 



BY C. A. FROST, SOUTH FRAMINGHAM, MASS. 



For several years considerable study has been given the specimens 

 of this genus and some of the more important results are here presented : 



Agrilus champlaini, new species. Holotype a male. Form of muticus, 

 robust, colour black with a purplish tint, subopaque. Ante?uiœ reaching 

 the middle of the prothorax, serrate from the fourth joint, bronzed ; head 

 densely ^ coarsely punctured, strigate above and pubescent below the 

 middle, occiput somewhat concaved, the median impressed line extending 

 to the middle of the front, eyes dark. Prothorax one-fourth wider than 

 long, widest at the middle, one-fourth wider at the base than at the apex, 

 sides regularly arcuate, hind angles obtuse with a rather strong carina, 

 lateral margin sinuous, two discal fovese in front of the middle, basal 

 depression distinct, lateral faint ; surface transversely rugose, becoming 

 confused and finer at the sides and anterior angles. Sciitellum not carinate, 

 notched. Elytra nearly parallel to the apical seventh, tips separately and 

 broadly rounded with coarse unequal serrations, disc slightly flattened with 

 a vague costa, suture elevated behind the middle, surface rather coarsely 

 irregularly granulate imbricate, finer in the basal depressions which are 

 moderately deep. Body beneath more shining, bronzed, with purplish 

 reflections especially along the sides and apex of the abdomen ; prosternai 

 lobe sinuate-truncate, intercoxal process broad, acute at tip, surface 

 roughly densely punctate, propleurse granulate ; inetasternum rather 

 closely granulate becoming subasperate posteriorly like the coxal plates ; 

 abdomen finely punctate, sparsely along the middle, more closely along the 

 sides, resembling imbricated scales on the first segment and with 

 undulating lines connecting the punctures on the others ; pygidium coarsely 

 punctate with a strong projecting carina. First abdominal segment flat 

 or slightly concave, second with smooth groove extending nearly to the 

 posterior suture, last ventral eroded-truncate at the tip, vertical portion of 

 abdomen granulate, inferior margin. serrate, apex smooth and truncate. 

 Front and middle tibiae mucronate ; claws similar on all feet, cleft with the 

 inner parts broad and curving inward, the apices nearly touching. 



Length 8 mm. Width at base of elytra 2.3 mm. 



The females at hand have the front less pubescent and more 

 concave, granulations of the eye more distinct, sides of the prothorax more 

 arcuate, being widest in front of the middle, discal depressions more 

 pronounced and with the intervals between the strigoe more distinctly 



August, 1912 



