14 PROCEEDINGS OP THE NATIONAL MUSEUM vol.73 



men rather uniformly covered with deep yellow pollen, the hind 

 margins of second and third segments not shining, the fourth seg- 

 ment has this pollen to the apex. First and second segments with a 

 single pair of median marginals, third with a marginal row of 8 or 

 10, fourth with a submarginal row of 8 considerably smaller. 



Legs black, front pulvilli elongated, equal to the last two tarsal 

 joints. Hind legs missing in the specimen. 



Wings light brown, yellow toward the base. Calypters rather 

 pure yellow. 



Female. — Front at vertex 0.37 of the head width, with three pairs 

 of orbitals. Antennae more yellowish, rather slender, the second 

 joint a little more than half the third in length; facial ridges with 

 three widely spaced bristles on one side, two on the other above the 

 vibrissae. Other characters as in the male. The second and third 

 abdominal segments at some angles show a shining reddish hind mar- 

 gin, in other angles this disappears. 



Length, 10-11 mm. 



Redescribed from two specimens; one male from Higuito, San 

 Mateo, Costa Rica (Pablo Schild); and one female, Potrero, Mexico, 

 April 10, 1923 (H. T. Osborn), reared from "army worms," identified 

 for Hawaiian Sugar Planters' Association. Originally described from 

 the State of Guerrero, in southern Mexico. 



Type. — In the British Museum. 



BELYOSIA RECTICORNIS Macgaart 



Gonia recticornis Macqtjakt, Dipteres Exotiques, Suppl. 5, 1854, p. 118 



(sep. 98). 

 Willistonia recticornis Braueb, Sitzungsber. Kais. Mus., vol. 106, 1897, 



p. 354. 

 Belvosia bella Giglio-Tos, Boll. R. Univ., Torino, vol. 8, 1893, No. 158, p. 3; 



Ditt. del. Mess., pt. 3, 1894, p. 30, fig. 6. 



Male. — Front 0.30 to 0.32 of the head width at vertex, not widen- 

 ing rapidly for a short distance, beyond which the inner margins of 

 the eyes diverge rapidly to the lower part so that the face is broad. 

 Frontal bristles mostly in two irregular rows, the parafrontals with 

 rather dense yellowish-gray pollen anteriorly, which becomes only a 

 little thinner toward the vertex. Face, parafacials, cheeks, and pos- 

 terior orbits sUvery pollinose with a very slight yellowish cast, the 

 small hairs below the lowest frontals pale and those of the cheek also 

 mostly pale. Antennae brownish black, a little more reddish basally, 

 the third joint about three times the second, considerably broadened 

 in the neighborhood of the arista. The distance from the vibrissae 

 to the oral margin is about equal to the length of the second anten- 

 nal joint; facial ridges with strong bristles almost up to the arista; 

 palpi reddish brown to brown. 



Thorax black, somewhat cinereous on the anterior part, the hind 

 angles a little reddish; scuteUum nearly black. 



