314 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



of eight strong ones, anal segment with discal and marginal rows. 

 Thorax, abdomen, and scutellum metallic bluish or greenish-black. 

 Claws of female about as long as last tarsal joint, hind and especially 

 middle tibiae strongly spinose. Anal cell ^videly open, ending con- 

 spicuously yet but little before wingtip, wrinkle and very slight 

 stump marking fourth vein beyond the bowed-in apical crossvein, 

 hind crossvein nearer to apical crossvein. 



Reproductive habit, larviposition probably of colored maggots, but 

 not on foliage. 



Type-species. — Neotrafoia incarum, new species. 



NEOTRAFOIA INCARUM. new species. 



Length of body, 7.5 mm; of wing, 6 mm. One female, Cuzco, 

 Peru, February 21, 1910, on foliage. 



Face, cheek-grooves, and orbits dull golden pollinose. Occiput and 

 bristly portion of cheeks ashy. Parafrontals, frontalia, and antennae 

 dark brown, the first showing faintly pollinose in some lights, the 

 third antennal joint broadly reddish-yellow on base. Palpi pale 

 reddish-yellow. Pleurae, mesoscutum, and scutellum thinly and 

 faintly silvery-white pollinose, the usual four or five vittae very 

 indistinct. Abdomen silver3^-white pollinose, showing most deeply 

 white on narrow bases of second, third, and fourth segments, but 

 extending thinly over practically whole surface as seen in oblique 

 view. Legs black. Wings clear. Tegulse white to pellucid, accord- 

 ing to lights. 



Type.— Csit. No. 15152, U.S.N.M. 



EUGYMNOCH^^TA, ne^A^ genus. 



This genus is proposed for Gymnochaeta alcedo H. Loew. It bears 

 only a superficial resemblance to the Palearctic Gymnochaeta. The 

 third antennal joint is of ordinary form, not more broadened than 

 distal end of the elongated second joint. The second aristal joint is 

 not elongate. Oral margin is prominent, distinctly produced. The 

 antennae are inserted on eye-middle. Cheeks are one-fourth to one- 

 third eye-height. Frontal bristles descend to insertion of arista. 

 The genus probably belongs in the subfamily Pyrrhosiinae. 



Reproductive habit, larviposition of colored maggots but not on 

 foHage. 



Type-species. — Gymnocliaeta alcedo H. Loew. 



EUGYMNOCHAETA EQUATORIALIS, new species. 



Gymnochaeta, sp. Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, pp. 133-134 

 Proc. Ent. Soc. Wash., vol. 13, 1911, p.. 161.— TD 3973. 



Length of body, 9 to 12 mm.; of wing, 8 to 11 mm. Tliree males 

 and one female, Piura, Peru, October 28 to November 1, 1910, on 



