116 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



Agrilus bivittatus Kirby, Fauna Boreali Americana, vol. 4, 1837, p. 161, no. 



215. — White, Nomenclature Coleopt. Ins. Brit. Mus., pt. 3, 1848, p. 38.— 



Bethune, Canad. Ent., vol. 4, 1872, p. 35. 

 Agrilus trwittatus Horn, Trans. Amer. Ent. Soc, vol. 18, 1891, p. 335 (typ. 



error for bivittatus Kirby). 

 Agrilus aurolineatus Gory, Mon. Bupr. Suppl., vol. 4, 1841, pp. 248-249. 



pi. 41, fig. 241.— LeConte, Proc. Acad. Nat. Sci. Phila., vol. 9, 1857, p. 9. 



Male. — Form elongate, rather slender, and feebly flattened above; 

 head bronzy green; pronotum black, opaque, and sometimes with a 

 feeble greenish or aeneo-cupreous tinge; elytra black, opaque, with a 

 more or less distinct greenish or bluish tinge; beneath dark bronzy 

 green, sometimes with a feeble cupreous reflection, and strongly 

 shining. 



Head with the front narrow, feebly convex, about equal in width at 

 bottom and at top, lateral margins strongly, arcuately expanded at 

 middle, and with a feeble, narrow, longitudinal groove extending 

 from the occiput to middle of front; surface coarsely, densely punc- 

 tate or scabrous in front, becoming longitudinally rugose on the occi- 

 put, and sparsely clothed with short, semierect hairs, epistoma narrow 

 between the antennae, and broadly, arcuately emarginate in front; 

 antennae extending to middle of pronotum, serrate from the fourth 

 joint, and the outer joints slightly longer than wide; eyes large, 

 rather broadly oblong, and slightly more broadly rounded beneath 

 than above. 



Pronotum one-half wider than long, the base distinctly narrower 

 than apex, and widest along apical fourth; sides nearly parallel or 

 feebly arcuate from apical angles to middle, then obliquely narrowed 

 to the posterior angles; when viewed from the side the marginal 

 carina is strongly sinuate, the submarginal carina straight or feebly 

 sinuate, the two carinae rather widely separated anteriorly, and con- 

 nected to each other near the base ; anterior margin strongly emargin- 

 ate, with a broadly rounded median lobe; base slightly emarginate 

 at middle of each elytron, the median lobe broadly rounded, and 

 broadly truncate in front of scutellum ; disk moderately convex, with 

 two round, feeble, median depressions, one near anterior margin, the 

 other near the base, a rather deep depression on each side along 

 lateral margin, and without prehumeral carinae; surface densely, 

 transversely rugose on the median part, with a few fine punctures 

 between the rugae, becoming finely, densely punctate toward the sides, 

 which are broadly, densely clothed with rather long, recumbent, 

 golden yellow or whitish pubescence. Scutellum strongly, trans- 

 versely carinate, and the surface finely reticulate. 



Elytra slightly wider than pronotum at base and slightly wider 

 at base than at apical third ; sides nearly parallel for a short distance 

 behind base, deeply, broadly, arcuately constricted in front of middle 



