406 . PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



and more slender hairs, this being more noticeable near the ocelli; 

 frontal suture well developed, contimiing behind the ocelR; a suture 

 runs obliquely backward just outside the ocelli; lateral ocelli nearer 

 each other than to the eyes; vertex and cheeks rather finel}' punctured; 

 with man}' (juite long- hairs, both being coarser on the lower part of 

 the cheeks, which at their widest part are nearly as wide as the eyes; 

 inner marginsof the eyes parallel; antennie black, the scape with short 

 hairs; first segment of the filament longest; the filament rather ])rown- 

 ish sericeous; mandibles stout, black, tinged near the bases of the teeth 

 with ferruginous; each reaching to the l)ase of the other when closed; 

 the anterior face strongly marked with ridges and aciculations, the 

 inner edge near its base with a row of long, black hairs, and a similar 

 row, but longer, on the posterior face close to the outer edge. 



Tfiorax. — Anterior face of the collar sloping upward at first from 

 the neck below, then vertical; dorsal edge narrow from front to 

 rear, rather flattened in the middle; posterior face closely appressed 

 against the mesonotum; surface of the collar with numerous fine punc- 

 tures and short hairs; prothoracic lobe with numerous hairs and a 

 fringe of short, pale brown ones on the posterior margin; mesonotum 

 closely, rather finely punctured, bearing many short hairs; its anterior 

 median groove pronounced, extending backward one-third to one-half 

 the length of the plate; lateral margin somewhat refiexed from the 

 prothoracic lol)e back to the posterior angle, then inward to where the 

 scutellum rises to its level; scutellum large, quite high in the middle, 

 with an evident median groove; its outer part in front refiexed; its 

 surface minutely punctured and bearing short, erect hairs, chiefly at 

 the sides; postscutellum narrow, with a median groove, with hairs 

 and punctures about like the scutellum; dorsum of the median seg- 

 ment coarsely roughened, almost transversely rugose, with a median 

 depressed line which broadens behind to form a depressed area; the 

 surface with many short, erect hairs; fovea large, shallow, crescentic; 

 posterior end and sides of the median segment like the dorsum but bear- 

 ing longer, moi'e closely placed hairs; meso- and metapleura smoother, 

 with scattered punctures, fewest on the horizontal part and lower half of 

 the vertical part of the metapleura; with scattered, long hairs; petiole 

 short, straight, with numerous long hairs. 



Ahdomeii. — Elongate ovate, about as much pointed in front as 

 behind; quite gray sericeous above; the last two plates punctured and 

 bearing hairs, both being coarsest on the last plate, the posterior mar- 

 gin of which is rather acuminate at its sides but bluntly rounded in 

 the middle; beneath gra}^ sericeous, with fine, scattered punctures and 

 short hairs, both being more abundant and nuu-h coarser on tiic last 

 two plat(>s; posterior margin of the fifth plate emarginate; last plate 

 narrow, rather conical, its posterior margin narrowly rounded. 



