1911] Alexander— Synonymical and Other Notes on the Tipulidae (Diptera) 199 



toothed along the inner face of the tip; teeth relatively few, one tooth, near the 

 middle, relatively larger than those below it. The anterior, or dorsal apical 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 gonapophyses 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 gi"ay cloud at the base of Rs; pale clouds along R2+3, basal 

 deflection of R4 + 6, cross-vein m, deflection of Mi + 2, and along the basal deflection 

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

 this species is related. 



This species belongs to the sub-genus Prionolabis, 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_subgenus 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. 4.2-5 mm.; w. 5 mm., ant. 5.75 mm. Described 

 from alcoholic specimens. 



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

 ommatidia large, few in number; antennae: 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 each end, the swellings armed with short, scattered hairs and on the 

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

 ends producing an annulated effect. 



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

 Halteres brownish-yellow, the knob large, darker. Legs: anterior pair, coxae 

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



