CHARLES P. ALEXANDER 227 



pl. 11, fig. n; as Furcomijia), which has Sci ending before the origin 

 of Rs, Rs short, not much longer than the deflection of i?4+5, long 

 slender halteres, etc. 



Genus RHIPIDIA Meigen 



1818. Rhipidia Meigen, System. Beschr., i, 153. 



Rhipidia domestica Osten Sacken 



1859. Rhipidia domestica Osten Sacken, Proc. Acad. Nat. Sci. Phila., 

 1859, 208. 



Bartica, six cf , eight 9 , November 27, 1912 to Februarys, 1913. 

 Mallali, one cT, March 31, 1913. 



Rhipidia annulicornis Enderlein 



1912. Rhipidia annulicornis Enderlein, Zool. Juhrb., xxxii, pt. 1, 80,81, 

 Bartica, two d^, eight 9 December 30, 1912 to April 14, 1913. 

 Mallali, acf and a 9 , March 13 to 15, 1913. 



Rhipidia conica sp. n. 



Antennae black with the thirteenth segment pale; mesonotal praescu- 

 tum produced into a high conical, somewhat spinous, tubercle; legs pale, 

 the tarsi tipped with darker; wings with the costal margin yellow, remain- 

 der of the wing-membrane grayish with scattered brown markings. 



Female, — length, 7.5 mm.; wing, 7.6 mm. 



Rostrum and palpi dark brownish black. Antennae with the segments of 

 the flagellum strongly serrated, the shafts of the segments short, antennae 

 brownish black except segment thirteen which is abruptly yellow. Eyes 

 almost contiguous on the vertex. A small median tubercle just behind the 

 antennal bases. Head brown with golden yellow reflections in certain 

 lights. 



Pronotum reddish brown. Mesonotal praescutum produced dorso- 

 cephalad into a conspicuous conical spine; anterior half of the sclerite light 

 reddish brown, dorsal posterior half, including the summit of the spine, rich 

 dark brown except a pale median portion near the suture ; scutum, scutellum 

 and postnotum brown. Pleura light brownish yellow without any conspic- 

 uous markings. Halteres pale, the knob darker. Legs,— fore legs with the 

 coxae and trochanters pale brownish yellow, femora yellowish brown passing 

 into brown at the tip, tibiae and tarsi very pale yellow, excepting segments 

 four and five and the posterior half of three of the tarsi which are dark 

 brownish black; other legs similar but the middle femora are darker 

 throughout and the posterior femora are lighter throughout and not 

 darkened at the tip. Wings with the cephalic portion light cream yellow, 

 the caudal portion including all of the cells behind M and much of the 

 radial field grayish; dark marks on the wings as follows: a small brown 

 blotch at the base of .1/; a large blotch at the origin of Rs and a nearly 

 subequal blotch midway between these two last; a small rounded blotch 

 at the end of 5r, ; darker suffusions at the fork of Rs, tip of Rj, end of 



TRANS. AM. ENT. SOC, XL. 



