52 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loa 



(2cfd', Aug. 11, 1939, J. D. Beamer); Billy's Island, Okefenokee 

 Swamp (Id', June, 1912); Griffin (14 9 9, 8cf cf, Aug. 12, 1939, 

 A. T. Hardy; 3 9 9, Aug. 12, 1939, J. D. Beamer; 39 9 , 2cf cr', 

 Aug. 12, 1939, R. H. Beamer; 4 9 9, 40^^^, Aug. 12, 1939, E. G. 

 Wegenek); Perry (Ic^, Aug. 12, 1939, R. H. Beamer; Icf, Aug. 12, 



1939, D. E. Hardy); Tifton (1 9 , Sept. 3, 1896, W. M. Wheeler; 1 9 , 

 Aug. 11, 1939, D. E. Hardy). Iowa: Mount Pleasant (1 9 , June 5, 



1940, H. Knutson). Kansas: Lawrence (IcT, Aug. 22, 1939, D. E. 

 HardjO; Sedgwick County (Ic^, 1916, "1,291 ft.," R. H. Beamer). 

 Louisiana: Red River Park (1 9 , Aug. 17, 1928, E. I. Beamer). 

 North Carolina: Asheville (19, Aug. 1, 1933, Wray); Franklin 

 (299, Aug. 17, 1939, D. E. Hardy); Goldsboro (IcT, July 20, 1946, 

 M. W. Wing); Lumberton (Id', June 22, 1928, T. B. Mitchell); 

 Raleigh (1 9 , early August, 1912, C. L. Metcalf). South Carolina: 

 Fairfax (1 9 , June 5, 1933, E. W. Howe). Texas: Galveston (299, 

 June 5, 1900, W. M. Wheeler). (In SEC, NC, UM, USNM, AMNH, 

 CU, and CWS.) 



Remarks: This species is closely related to R. maculosa, from 

 which it can be distinguished by the male genitalia and full banding 

 of the wings. Frequently in this species (especially males) the an- 

 terior tergites of the abdomen are yellowish, whereas in R. maculosa 

 the abdominal tergites are wholly dark brown or black. 



Rivellia texana, new species 



Figure 5,f-i 



Holotype: Male. Body length about 3.6 mm. 



Head: Frons brown, somewhat yellowish toward antenna; upper 

 fronto-orbital plates and ocellar triangle little darker than frons. Face 

 with dorsal half pruinose, ventral half shining, smooth, brown ; para- 

 facials and part of orbits ventral to each eye bro^^^lish yeUow. 

 Antenna with first and second segments yellow; third segment black- 

 ened at tip and on outside, remainder yellow, the tip pointed anteri- 

 orly. Anteclypeus concolorous with ventral portion of face. Palpi 

 yellow. Postcranium dark brown, pruinose. 



Thorax: Mesonotum dark brown; strong humeral and posterior 

 dorsocentral setae present. ScuteUum and postscutellum concolorous 

 with mesonotum. Pleura dark brown, mostly shining. Mesopleuron 

 with scattered pale setae on posterior half; pruinose area at dorsal 

 posterior corner in form of rectangle, one side extending two-thirds 

 distance to ventral posterior corner, the other extending about half 

 way to anterior spiracle. Sternopleuron with pruinose spot covering 



