3 7 '2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



Tho7'ax. — Collar narrow, its anterior and posterior faces nearl}'^ ver- 

 tical, not appressed against the mesonotum; its entire anterior face 

 and dorsal edge thickly clothed with golden yellow pubescence, least 

 dense in the middle, and bearing long yellow hairs; the pu])escence 

 does not extend far down at the sides, exposing the black, minutely 

 punctured surface; prothoracic lobe black, the upper three-fourths of 

 its posterior half covered with golden 3 ellow pubescence and short 

 yellow hairs, the pubesence almost meeting the mesonotal ])and; its 

 hinder margin with a fringe of short pale hairs; mesonotum with a 

 faint anterior, median, impressed line or narrow band; its central area 

 velvety black; at each side a broad pubescent band extends from just 

 above the prothoracic lobe upward to above the tegula, then back to 

 the liinder end of the plate, narrowing as it goes, then turns inward 

 to meet the band from the other side, the two })ecoming very narrow 

 behind and barely meeting; a reflexed margin is present on the plate 

 from near the front of the tegula to a short distance in on the poste- 

 rior margin; the black area of the mesonotum bears many short pale 

 yellow hairs; scutellum black, with a median longitudinal depression; 

 ver}'^ minutely punctured and sericeous; postscutellum golden pubes- 

 cent as far laterally as the groove on the median segment leading to 

 the stigma; median segment dorsum and posterior end thickly covered 

 with golden pu])escence and long yellow hairs, Avhich do not conceal 

 the grooves which mark the limits of the dorsum nor the fovea; a 

 band of pubescence follows the lateral edge of the dorsum from the 

 postscutellum to the stigma, and thence on both sides of the stigmatal 

 groove to the hind coxa; a space between this band and the pubescence 

 on the posterior end is black, with scattered punctures, and extends 

 to the side of the petiole; mesopleuron with a large golden pubes- 

 cent spot just behind the jwothoracic lobe, with a slight extension 

 upward and forward toward the tegula; just above and in front of the 

 anterior coxa? is a triangular pul)escent area extending toward the 

 neck; under surface of the thorax yellow sericeous, in places almost 

 pubescent, with long yellowish hairs, abundant except on the pros- 

 ternum; petiole short, straight, black, strongly sericeous, almost yel- 

 low pubescent, with short yellow hairs. 



AhdoDicm. — Elongate oval, a little longer than the thorax, not quite 

 as wide at its widest place as the distance between the outer edges of 

 the tegula' ; its color above ferruginous, the posterior margins of the 

 plates a little darker, and on the third, fourth, and fifth plates this 

 shade is carried forward on the median line toward the middle of the 

 plate; the entire surface sericeous, smooth, except the terminal plate, 

 which is coarsely punctured and bears a number of long yellowish 

 hairs; beneath, the same color as above, but with darker markings, 

 more irr(\gidar in form and position, giving a somewhat mottled 

 appe;irane(S there are a few yellowish hairs at the sides on each plate, 



