1911] Alexander— Synonymicdl and Other Notes on the Tipiditla: {Diptera) 199 



toothed along the inner face of the tip; tectli relatively few, one tooth, mar the 

 middle, relatively larger than those below it. The anterior, or dorsal ai)ieal ap- 

 pendage is simple, unarmed, projecting mesally, curved so that the tip projects 

 slightly caudad. The Anal tube is long, almost concealing the guard of the penis; 

 the second gonapophyseis are long and slender; the guard of the penis is bent 

 strongly ventrad near its tip. (See fig. 10.) 



Wings: light yellowish-gray, the cells all uniform in coloration; stigma rather 

 indistinct, gray; a pale gray cloud at the base of Ks; pale clouds along Uj+j, basal 

 deflection of R. + ., cros.s-vein m, deflection of Mi+j, and along the basal deflection 

 of Cur, Cu tinged with brown. Venation as in Limnophila rufibasis, O.S. to which 

 this .species is related. 



This species belongs to the .sub-genus Prianolabis, O.S., and is closely related to 

 L. (P.) rufibasis, O.S. of the Eastern States. It differs in the following respects: 

 L. rufibasis has the costal and subcostal cells much richer yellow than the other 

 cells of the wing; stigma clear-cut, dark brown; markings along the cord of the 

 wing and along Cu, much darker. Base of the femora bright yellow, not tinged 

 with brown. The deciding difference lies in the shape of the anterior apical appen- 

 dage of the male genitalia, which, in rufibasis (See fig. 11) is bifurcated with the 

 ventral arm toothed, whereas in simplex (see fig. 10), it is simple. The species, L. 

 munda, O.S., which is also referred to the suligenus Prionolabis is very distinct from 

 either of the above. 



Holotype: male, Gainesville, Ga., April 2, 1911; Coll. J. C. 

 Bradley. 



It is probable that some of Osten Sacken's specimens of rufi- 

 basis {Monographs, etc., IV, p. 226) belong to this new species, as 

 he says "the wings are more yellowish in the larger specimens and 

 more grayish in the smaller ones." The drawing of the genitalia 

 (id., pi. IV, fig. 27) is highly diagrammatic. 



Polymera georgiae sp. nov. 



Male. Dark brownish black; L. i.i--> mm.; w. .') turn., ant. .5.7.5 mm. Described 

 from alcoholic specimens. 



Rostrum and palpi, light brown; front and vertex, dark brown; eyes, black, the 

 ommatidia large, few in number; antcnme: first segment, short, round, brown; second 

 segment, rounded, brown; third, very elongated, cylindrical, brownish-yellow, the 

 tip, pale, whitish; segment with short scattered hairs and a few long delicate ones; 

 segment 4 to 16, generally .similar to one another in shape, elongate-cylindrical, 

 swollen near ca(-h end, the swellings armed with short, scattered hairs and on the 

 third to fifth segments with scanty long deUcate ones; segments brown, pale at the 

 ends producing an anmilated effect. 



Thorax: pro-, raeso-, and meta-nota, as well as the pleurae, dark brownish-black. 

 Hal teres brownish-yellow, the knob large, darker. Legs: anterior pair, coxte 

 brown, trochanters light brown; femora, light brown, with a dark sub-apical ring. 



