16 PROCEEDINGS OF THE NATIONAL, MUSEUM vol. 77 



Head with the front rather short, flat, and with a narrow longi- 

 tudinal groove between the eyes ; surface rather coarsely, irregularly 

 punctate, and rather densely clothed with long, recumbent cinereous 

 pubescence. Eyes narrowly separated on the front. Antennae ex- 

 tending nearly to apex of elytra; joint 1 shining and sparsely 

 punctate, the following joints opaque, densely pubescent, and with 

 a few long, stiff hairs at apex on inner margin; joint 1 slightly 

 clavate ; joints 2 to 4 slender and cylindrical, the third only slightly 

 longer than fourth, which is subequal in length to the fifth; joints 5 

 to 10 triangular, the joints becoming shorter and broader toward tip 

 of antennae; joint 11 oblong, and feebly emarginate at apex. 



Pronotum about as wide as long; sides slightly arcuately rounded, 

 and rather strongly constricted at base ; surface moderately convex, 

 without tubercles or longitudinal ridges, rather coarsely reticulate- 

 punctate, each puncture with a small round elevation in the middle, 

 and the surface rather densely, irregularly clothed with long, recum- 

 bent cinereous pubescence, which is denser along the anterior part 

 of the lateral margins. Scutellum triangular, densely clothed with 

 cinereous pubescence at apex. 



Elytra extending to just beyond base of first abdominal segment, 

 abruptly subulate behind the middle, strongly dehiscent posteriorly, 

 the tips narrowly rounded ; surface glabrous, with the brownish-black 

 areas coarsely, confluently punctate, and the vitreous areas with a 

 few coarse, inconspicuous punctures. 



Abdomen beneath, except last segment, densely clothed with long, 

 recumbent cinereous pubescence, which nearly conceals the surface. 

 Sternum finely, densely punctate, and clothed with pubescence sim- 

 ilar to that on the abdomen. Anterior and middle legs short, the 

 femora strongly clavate. Posterior legs very long, the femora feebly, 

 gradually clavate, coarsely scabrous, and sparsely clothed with short, 

 stiff, semierect white hairs; tibiae armed on apical halves with a 

 rather dense tuft of long, erect white and black hairs intermixed, 

 the white hairs predominating apically. 



Female. — Differs from the male in having the eyes separated from 

 each other on the front by about the width of the labrum, the an- 

 tennae shorter, extending only to middle of elytra, and the posterior 

 femora yellowish brow^n, becoming dark brown on the upper margin 

 a,nd at middle of outer surfaces. 



Length, 8.5-9 mm. ; width, 2.4 mm. 



Ty'pe locality. — Kurrenabaque and Ganamina, Bolivia. 



Ty^e and allotype.— C2Lt. No. 42827, U. S. N. M. 



Described from two examples, the type (male) collected at Kurre- 

 nabaque (Beni River), Bolivia, December, 1921, and the female 

 collected at Canamina, Bolivia, July, 1921. Both specimens were 



