176 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 75 



much reduced, posterior orbits; fascia on metanotum ; curved fascia 

 on dorsum of popodeum; posterior lateral angles of propodeumj 

 widely separated spots on tergites 1-5, decreasing in size from one 

 to five ; spot at apex of anterior and middle femora ; line on anterior 

 border of anterior and middle tibiae and metatarsus; basal part of 

 apical segment of anterior tarsus; yellow. 



The wings are slightly but distinctly and evenly infumated. The 

 flagella of the antennae are lost, only the first and second segments 

 of one remain and these are black. The second sternite on the mid- 

 line basally bears a carina that extends about half the length of 

 the sternite, but does not terminate in a process or tooth. The pu- 

 bescence on the labrum, clj^peus, and lower part of frons is quite 

 short and silvery. Elsewhere it is short or lacking. 



Length 17 mm. Described from a single male collected by William 

 M. Mann at Carinas Beni, Bolivia, January, 1922. 



Ti/pe.— Cut. No. 40855, U.S.N.M. 



BICYRTES PULLATA, new species 



Type (male). — Black: short, narrow anterior orbits; small spot at 

 base of scape below; minute lateral spot on scutellum; fascia on 

 metanotum; fascia on propodeum continued downward on posterior 

 surface about half^vay; broad spot on posterior and dorsal surfaces 

 of lateral angles of propodeum; widely separated lateral spots on 

 tergites 1-4, decreasing in size from one to four; spot on distal end 

 of middle femur ; anterior border of middle tibia ; anterior border of 

 anterior tibia and metatarsus; and basal part of apical segment of 

 anterior tarsus; yellow. 



The pubescence is short and sparse, being longest on the vertex 

 and upper part of the frons. The antennae show no special mark- 

 ings or modifications. The second sternite bears a small sharp- 

 pointed but prominent median tooth. The wedgelike edge of the 

 lateral angle of the propodeum shows, slightly above its middle 

 point, a small toothlike prominence. The wings are hyaline. 



Although this form differs from quinquemaculata in having the 

 wings hyaline instead of infumated, in having only four of the 

 tergites maculated instead of five, and in having a prominent tooth 

 on the second sternite; nevertheless, further collecting and study 

 may prove that it is only a regional variety of that species. How- 

 ever, with only these two specimens before me it seems to me best 

 to regard them as representatives of two distinct species. 



Length 17 mm. Described from a single male taken at Chapada. 

 Brazil. 



Type. — In the Carnegie Museum at Pittsburgh, Pa. 



