4 PEOCEEDINGS U. S. NATIONAL MUSEUM vol. 74 



Brauer and Bergenstamm (type, Taohina, se^^cZ^a Meigen), but differs 

 m having no discals, the ocellars on the triangle, not widely spaced 

 opposite the front ocellus. 



The principal characters are as follows: Antennal axis one and a 

 half times the vibrissal, face curved, more receding below, parafacials 

 rather wide ; facial ridges prominent, bristly half way or more ; both 

 sexes with orbitals, only one frontal below origin of antennae; eyes 

 bare; palpi normal, proboscis short; third antennal joint long and 

 slender, arista bare, vibrissae at oral margin; third vein with two 

 large setules at base, first bare ; fourth vein broadly curved almost in 

 a right angle, straight for a distance, then concave to costa, the first 

 posterior cell closed in the margin only a little before the wing tip; 

 costal section from first to second vein only a little shorter than from 

 second to third; hind cross vein straight, semierect, barely beyond 

 middle between small and bend. 



Type of genus. — SigeJotroxis parvus, new species. 



SIGELOTROXIS PARVUS, new species 



Male. — Front 0.35 of head width; head with pale yellow pollen, 

 frontal stripe brown, as wide above as both parafrontals ; at least one 

 proclinate orbital; palpi yellow apically, darker toward base; first 

 two antennal joints reddish, third brown, very long and quite slender, 

 fully five times the second; arista yellow basally, short, thickened 

 about half way; cheek one-half the eye height. Thorax black, 

 cinereous; scutellum broadly reddish. Chaetotaxy; acrostichal 3, 3; 

 dorsocentral 3, 4; supraalar 3; intraalar 2; postalar 2; humeral 2; 

 posthumeral 1; presutural 2 (inner small); notopleural 2; sterno- 

 pleural 2, 1; scutellum with 3 lateral, a large pair of apicals and a 

 smaller discal pair. Hypopleurals and post-scutellum as usual ; calyp- 

 ters ivory white. Abdomen rather short, subshining black, a narrow 

 band of pale pollen at base of third segment, fourth more than half 

 pollinose. First abdominal segment without median marginals, sec- 

 ond with a pair, third with row of six, fourth irregularly bristly 

 except at base. Genital segments small, black. Legs black, pulvilli 

 small, mid tibiae with one bristle on outer front side, hind tibia sub- 

 ciliate. Wings hyaline. 



Female. — Front 0.35 of head width; third antennal joint four times 

 the second, probably tv/o orbitals. 



Length, 4.5 to 6 mm. 



Described from three males and two females, reared from ruteline 

 beetles at Foochow, China, in 1897 by C. R. Kellogg, received from 

 the Hawaiian Sugar Planters' Experiment Station, to which two 

 paratypes are returned. 



7V/^<?.— Male, Cat. No. 40985, U.S.N.M. 



