26 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 73 



Length, 10-11 mm. 



Described from two males and two females, including the type and 

 allotype, collected at Chapada, Brazil (H. H. Smith), received from 

 the American Museum of Natural History; and one male from San 

 Bernardino, Paraguay (K. Fiebrig). 



Paratype.— Male and female, Cat. No. 40468, U.S.N.M. 



BELVOSIA CANADENSIS Cnrran 



Belvosia canadensis Curran, Bull. Brooklyn Ent. See, vol. 22, 1927, p. 152. 



Male. — Front 0.42 and 0.43, in two, of the head width at vertex, 

 widening rather gradually; parafrontals cinereous polhnose, the pollen 

 becomes thinner in the middle, but still somewhat evident; frontal 

 bristles in about three irregular rows. Face, parafacials, cheeks and 

 posterior orbits white, the parafacial and orbit silvery, the few hairs 

 below the frontals and those of cheek black. Antennae black except 

 at junction of second and third joints, of moderate size, the third joint 

 slightly more than twice the second. Arista flattened for most of its 

 length, but sharply pointed. Vibrissae considerably above the oral 

 margin, the distance about equal to the second antennal joint. Facial 

 ridges with a single row of moderate bristles about to the middle of 

 the third antennal joint. Palpi brown, extreme apex paler; beard 

 white. 



Thorax black, with thin gray pollen in front. Hind angles and 

 scutellum dark brown; sternopleurals three, the fourth hairlike. 



Abdomen black, third and fourth segments golden pollinose, except 

 a narrow hind margin, which in the third segment only occurs along 

 the middle, the golden pollen extending to the extreme apex of the 

 segment along the sides; in the fourth segment there is a distinct 

 shining black margin all the way around. The first and second 

 segments with a single pair of median marginals; third with a row of 

 12; fourth with about 8 considerably smaller. 



Legs black ; front pul villi minute ; hind tibia with a row of bristles of 

 increasing size on the basal three-fifths, six or seven in all, not very 

 large. 



Wings blackish, front calypters the same color, hind calypters 

 almost white. 



Female. — Front at vertex 0.42 of the head width, the same in three, 

 widening rather rapidly; three proclinate orbitals, the frontals in 

 three irregular rows but not very strong. Third antennal joint less 

 than twice the second. 



Length, 9-11 mm. 



Redescribed from a male and female paratype, the former from 

 Calgary, Alberta, September 2, 1902; the latter, Douglas County, 

 Kans., May 19, 1923 (W. J. Brown); 1 male collected by Professor 



