12 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. C6 



AGRILUS BOLIVIENSIS. new species 



Male. — Form small, slender, and moderately shining; head 

 emerald-green in front, becoming aureus, reddish and brownish- 

 cupreous on the occiput; pronotum green, with a purplish tinge; 

 elytra black, with a feeble purplish reflection, and each elytron 

 ornated with cinereous pubescence as follows: A small, sparselj" 

 clothed spot in basal depression; an oblong, feebly impressed spot 

 near sutural margin at basal third; and a similar one near the 

 apical third. Beneath piceous, with a strong aeneous and cupreous 

 tinge, and more shining than above; legs aeneo-viridis, more or less 

 cupreous, and the tarsi blackish. Antennae aeneo-viridis. 



Head with the front rather narrow, nearly flat, the sides strongly 

 arcuately expanded at vertex, front without depressions, but with a 

 rather deep, narrow longitudinal groove on the occiput and vertex; 

 surface coarsely, densely granulose, and feebly scabrous on the front, 

 becoming feebly longitudinally rugose on the occiput, and without 

 any distinct pubescence ; epistoma narrow between the antennae, and 

 deeply, arcuately emarginate in fi-ont; antennae rather short, not 

 extending to middle of pronotum, and serrate from the fourth joint. 

 Pronotum one and one-third times as wide as long, distinctly wider 

 in front than behind, and widest near apical fourth; sides feebly 

 rounded from apical angles to behind the middle, then more obliquely 

 narrowed to near the posterior angles, where they are feebly ex- 

 panded, when viewed from the side the two margins are feebly sin- 

 uate, separated anteriorly, and connected to each other near pos- 

 terior angles; anterior margin deeply arcuately emarginate, with a 

 broadly rounded median lobe ; base strongly emarginate at the mid- 

 dle of each elytron, and the median lobe broadly rounded, and more 

 or less truncate in front of scutellum ; disk moderately convex, with- 

 out any distinct median depressions, but with a shallow depression 

 on each side along the lateral carina, which is not sharply defined, 

 slightly arcuate, and extending from the posterior angle to the 

 lateral margin at middle; surface densely, but not very coarsely 

 rugose, the rugae more or less transverse on the disk, but becoming 

 more irregular and obsolete toward the sides, the intervals densely 

 granulose, with numerous fine punctures along the rugae, and with- 

 out any conspicuous pubescence. Scutellum strongly transversely 

 carinate, and strongly acuminate at the apex; surface finely and 

 densely reticulate. Elytra slightly wider than pronotum at base; 

 sides parallel for a short distance behind base, broadly arcuately con- 

 stricted at middle, broadly expanded at apical third, then obliquely 

 attenuate to the tips, which are separately acutely rounded, and 

 rather coarsely dentate; sides of abdomen narrowly exposed above; 

 disk feebly convex, and each elytron with a broad deep basal de- 



