270 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



strongly, contiguously punctate on the disk; scape bicarinate be- 

 neath, strongly punctate; first segment of flagellum slightly longer 

 than it is wide at the apex, distinctly shorter than the second seg- 

 ment; antennal tubercles very distinctly separated; antennal scrobes 

 distinctly carinate above, the carina most prominent midway be- 

 tween the antennal tubercles and the margins of the eyes; front 

 strongly, contiguously punctate, the vertex and genae with the punc- 

 tures more shallow and separated; distance between the margins of 

 the eyes and postero-lateral angles of the head about equal to the 

 greatest diameter of the eyes; relative widths of head and thorax, 

 5.25-5.25. 



Thorax ferruginous, the dorsum dark, almost dark mahogany red, 

 the sides bright ferruginous ; clothed with erect and semirecumbent, 

 silvery pubescence, except the mesonotum laterally with a few dark, 

 erect hairs, the pubescence moderately dense on the pronotum, 

 mesonotum, and scutellum, sparse on the sides of the thorax, and pro- 

 podeum throughout; pronotum and mesonotum with large contigu- 

 ous punctures, coarser toward the caudal margin of the mesonotum; 

 scutellum coarsely punctate, similar to the caudal area of the mesono- 

 tum; anterior margin of scutellum produced forming a prominent 

 angulation medially; cephalic margin of propleura obscurely cari- 

 nate, the disk with large scattered punctures dorsally, indistinctly 

 sculptured elsewhere; mesopleura with large, contiguous punctures 

 throughout, except the narrow cephalic margin finely punctate; 

 metapleura glabrous, impunctate, except for a few large punctures 

 ventrally; sides of propodeum glabrous, impunctate anteriorly, 

 coarsely f oveate posteriorly ; posterior face and dorsum of propodeum 

 with large, deep reticulations, the latter largest medially; tegulae 

 glabrous and impunctate except narrow basal and inner lateral 

 margins setigerously punctate. 



Abdomen ferruginous; first segment very strongly nodose; first 

 tergite coarsely, deeply, confluently punctate posteriorly and later- 

 ally, anteriorly the punctures scattered, sparsely clothed with erect, 

 silvery pubescence, no distinct apical fringe; second tergite with 

 large, contiguous punctures throughout, sparsely clothed with erect 

 pubescence, that on the anterior half silvery, on the posterior half 

 dark, and with an apical fringe of silvery pubescence; tergites 3-6 

 strongly, very densely punctate; tergites 3 and 4 sparsely clothed 

 with erect silvery pubescence, and each with an apical fringe of 

 silvery pubescence; tergites 5 and 6 sparsely clothed with black pub- 

 escence and each with an apical fringe of black pubescence; pubesc- 

 ence at base of ultimate tergite silvery ; first sternite with large, deep 

 punctures, the usual median longitudinal carina indistinct, sparsely 

 clothed with erect, silvery pubescence; second sternite with large, 



