846 THE LATE MR. M. JACOBY ON NEW [NoV. 26, 



Hah. Paraguay. 



Allied to G. 17 -gutiatus Suff., but with extra pale lateral 

 stripes, and differently sculptured. 



Griburius aureovillosus, sp. n. 



Obscure purplish or greenish black ; labrum and base of femora 

 fulvous ; thorax nearly impunctate ; elytra finely punctate- 

 striate anteriorly, a transverse band at base and an apical spot 

 flavous ; body below densely golden-yellow pubescent. 



Length 5 millim. 



Head finely punctured anteriorly only ; eyes large and oblique, 

 constricting the head at base, inner margin tiiangularly and but 

 slightly notched ; antennae extending to base of elytra only, five 

 lower joints fulvous, rest dark, basal joint black above. Thoi-ax 

 more than twice as broad as long, sides angulately and strongly 

 narrowed from middle to apex, and to a less extent at base, with 

 distinct reflexed margins ; surface with deep oblique sulcus at sides 

 near base, the depressions more strongly, the disc very finely 

 punctured ; median lobe of basal margin broad, feebly but dis- 

 tinctly produced. Scutellum much broader than long, closely 

 and finely punctured. Elytra broad, slightly narrowed at apex, 

 irregularly punctured near suture, rest of disc finely punctate- 

 striate, apex smooth ; lateral lobes strongly pi-oduced ; the flavous 

 band at base of regular shape, extending downwards to one-third 

 the length of the elytra ; apical spot transverse. Base of femoi'a, 

 apex of tibiae, and the tarsi flavous. Presternum broad, widened 

 posteriorly, base obtusely I'ounded. Entire under side densely 

 clothed with silky golden pubescence. 



Jlab. Upper Amazons. 



Allied to G. argentatus Erichs., but without pubescent sides of 

 thorax and with golden pile on the under side. 



Griburius hirtifrons, sp. n. 



Bluish black ; base of femora fulvous ; thorax finely and closely 

 punctured ; elytra strongly punctate-striate, a subquadrate patch 

 at base, not extending to suture, and the apex flavous ; head finely 

 pubescent. 



Length 3| millim. 



cJ , Head finely punctured at vertex, lowei- portion fui'nished 

 with yellow pubescence ; eyes very large, nearly meeting at 

 middle, feebly notched ; antennae long and slender, lower three 

 joints fulvous below, rest black, third and fourth equal. Thorax 

 one-half broader than long, sides rounded at middle, narrowed in 

 front ; surface very closely and distinctly punctured, pvu-plish ; 

 base with a slight depression at each side near scutellum ; median 

 lobe broadly but feebly produced. Scutellum broadly subquadrate, 

 finely punctui-ed. Elytra subquadrately oblong, finely punctate- 

 striate, punctui'cs irregular near suture and partly double at base ; 

 apex impunctate ; a subquadi'ate, ti'ansverse band at base, sui-- 

 rounding the shoulders, but not extending to sutiu-e, and a spot at 



