156 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



grooves of adjoining segments interrupted by the articulation of the 

 segments; antennal scrobes feebly carinate above, the carina extend- 

 ing about half way from the antennal tubercles to the margins of the 

 eyes; front and vertex coarsely, more or less confiuently punctate; 

 genae moderately, contiguously punctate, not as coarsely sculptured 

 as the front and vertex; relative widths of head and thorax, 7.75- 

 9.25. 



Thorax dark mahogany red, the integument of the dorsum some- 

 what lighter in color than the remainder of the thorax; dorsum 

 foveately, more or less confiuently punctate; scutellar scale broad, 

 prominent; a transverse, sinuate carina immediately anterior to the 

 scutellar scale ; dorsal half of propodeum coarsely, deeply, foveately 

 punctured, the ventral half, shallov/ly rugoso-punctate ; dorsum of 

 thorax, and dorsal half of propodeum clothed with dense, appressed 

 and erect, golden yellow pubescence; ventral half of propodeum 

 with very sparse, erect, dark hairs ; propleura coarsely, contiguously 

 punctate, clothed with sparse, erect, dark golden hairs ; anterior ' 

 third of mesopleura with small, distinct punctures, sparsely clothed 

 with dark hairs, the posterior two-thirds coarsely, confiuently punc- 

 tate, sparsely clothed with long, erect, dark hairs; metapleura 

 glabrous, impunctate, except scattered, large punctures on the ventral 

 half, and large, coarse, contiguous punctures near the ventral mar- 

 gin; sides of propodeum punctate, the punctures at the anterior 

 margin large and scattered, becoming coarse and confiuent towards 

 the posterior margin. 



Abdomen black, except the integument of the disk of the second 

 tergite yellow ; first tergite impunctate except for coarse, contiguous 

 punctures at the apical margin, clothed with long, sparse, erect, 

 dark hairs, and a thick apical fringe of golden yellow hairs; base 

 and sides of second tergite with large, coarse, more or less confiuent 

 punctures, the disk with moderate, contiguous punctures, not as 

 coarsely sculptured as the base and sides ; second tergite clothed with 

 long, appressed and erect, golden yellow pubescence, very sparse 

 at the sides, more dense on the disk, the apical fringe thick and 

 concolorous with the pubescence of the tergite; tergites 3-5 with 

 moderate, contiguous punctures, clothed with appressed and erect 

 pale golden pubescence; pubescence at sides and base of pygidial 

 area dark; pygidial area longitudinally striate; longitudinal carina 

 of first sternite very prominent medially, the sternite punctate and 

 sparsely clothed with long, erect, pale hairs; second sternite with 

 large punctures, distinct medially, contiguous at the sides and apex, 

 clothed with sparse, erect, pale hairs, and a thick apical fringe of 



