Vol. XXXl] I NTOMOLOGICAL NK\Ys 9 



convex, two median depressions with an oblique lateral depression on 

 each side, surface transversely strigose. Scutellum transversely carinate, 

 surface granulate. Elytra sinuate behind the humeri, dilate behind the 

 middle, apices separately rounded and serrulate; basal depressions slight, 

 sutural margin elevated behind the middle, surface closely imbricate- 

 granulatc. Body beneath more shining than above, prosternal lobe with 

 slight emargination, prosternal process slightly narrowing, acute at tip, 

 median line of pubescence lacking in both sexes, first two ventral segments 

 of male flat, but not pubescent, Pygidium without a projecting carina. 

 First joint of hind tarsus as long as the three following joints; tarsal claws 

 deeply cle^t, the lower portion turned inward, nearly touching that of 

 the opposite side, claws on all three pairs of feet in both sexes similar. 

 Length 4 mm.; width .75 mm. 



c? 1 . Front bright green, tibiae on all three pairs of feet mucronate. 



9 . Front bronze, posterior tibiae not mucronate. 



Described from a series of three males and seven females. 

 Type male and allotype collected at Framingham, Massa- 

 chusetts, May 28, by Mr. C. A. Frost; two paratypes at 

 Charter Oak, Pennsylvania, June 21, by Mr. H. B. Kirk 

 and the author; one from Berks County, Pennsylvania, 

 June i, without collector's label; one Harrisburg, May 24; 

 one Chambersburg, Pennsylvania, June 6; and one Hum- 

 melstown, June 2, by the author. Type material in the 

 author's collection, two paratypes in the collection of the 

 Bureau of Plant Industry. 



I take pleasure in naming this species after my friend, 

 Mr. C. A. Frost, who has determined much material for me 

 and given me many valuable suggestions. 



The species has been confused with A. otiosiis in collec- 

 tions, but the lack of the ventral median pubescent stripe 

 in the male will at once separate it from this species. The 

 male genitalia are also different from those of A. oliosiis and 

 A. juglandis, being flattened and flared at the apex. The 

 sides are densely punctate above and below. In A. oliosiis 

 and A. juglandis the sides of the male genitalia are nearly 

 parallel near the apex. 



The male also lacks the ciliate antennae of A. criniconiis 

 and the (imbriate and truncate last ventral segment of A. 

 defectus. According to Dr. Horn's key, it would come after 

 A. otiosus. 



