194 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



Agrilus semes Gory, Mon. Bupr. Suppl., vol. 4, 1841, p. 234, pi. 39, fig. 225. — 



LeConte, Proc. Acad. Nat. Sci. Phila., vol. 9, 1857, p. 9 ; Trans. Amer. 



Philos. Soc, vol. 11, new ser., 1859, p. 250 ; Proc. Acarl. Nat. Sci. Phila., 



vol. 25, 1873, p. 333. 

 Agrilus imprcssipenuis Uhleb, Proc. Acad. Nat. Sci. Phila., vol. 7, 1855, 



p. 416. 



Male. — Form moderately elongate, feebly flattened above, and 

 moderately shining; head bright green in front, becoming cupreous 

 on the occiput; pronotum and elytra dark olivaceous green, with a 

 more or less distinct cupreous tinge, especially toward the apex, and 

 each elytron ornamented with three more or less distinct pubescent 

 spots; beneath cupreous, the median parts and legs more or less 

 bronzy or greenish, and more shining than above. 



Head with the front rather wide, nearly flat, about equal in width 

 at top and bottom, the lateral margins feebly, broadly constricted at 

 the middle, transversely depressed behind the epistoma, a large, 

 distinct, deep fovea behind the antennal cavities, and with a shallow, 

 longitudinal groove extending from the occiput to epistoma ; surface 

 densely, coarsely granulose, feebly, sparsely rugose, the rugae longi- 

 tudinal on the occiput, sparsely punctate between the rugae, and 

 clothed with a few short, recumbent, white hairs behind the epistoma; 

 epistoma strongly transverse between the antennae, and very broadly, 

 deeply, arcuately emarginate in front ; antennae extending nearly to 

 posterior angles of pronotum, serrate from the fourth joint, and the 

 outer joints distinctly longer than wide; eyes large, broadly oblong, 

 and slightly more acutely rounded beneath than above. 



Pronotum nearly one-third wider than long, slightly narrower at 

 base than apex, and widest near apex; sides nearly parallel at base, 

 obliquely expanded to near the apex, then feebly narrowed to the 

 apical angles; when viewed from the side the marginal and submar- 

 ginal carinae are strongly sinuate, narrowly separated anteriorly, 

 and connected to each other behind the middle; anterior margin 

 strongly sinuate, with the median lobe broadly rounded; base feebly 

 emarginate at middle of each elytron, the median lobe broadly 

 rounded, and feebly emarginate in front of scutellum; disk moder- 

 ately convex, with a broad, median depression in front of scutellum, 

 a broad, moderately deep, oblique depression on each side along lat- 

 eral margin, and with distinct, feebly arcuate, prehumeral carinae, 

 extending from posterior angles to basal third; surface coarsely, 

 deeply, transversely rugose at middle, the rugae becoming more or 

 less longitudinal toward the sides, sparsely, finely punctate between 

 the rugae, and with a few hairs in the lateral depressions. Scutellum 

 strongly, transversely carinate, and the surface densely, finely reticu- 

 late. 



