502 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 4'.!. 



middle of the wing and the first division is nearly twice as long as 

 second, the hind tibiae have a few delicate setulse on the apical half 

 of their postero-dorsal surfaces, and the anterior pair of scutellar 

 bristles are much reduced in size. The male is similar to the female 

 in everything, but the hypopygium is not exserted, the anal pro- 

 tuberance is long, bright yellow, and rather weakly bristled. The 

 sixth abdominal segment is more elongate than in the next species 

 and nearly bare, having no distinct bristles. Male similar to female, 

 hypopygium as in table. 



Four specimens Kaslo, British Columbia (R. P. Currie). "Hov- 

 ering over ant galleries in stump." Standing as Syneura coccipMla 

 Coquillett (det. Coquillett). 



Type.— Cat. No. 14894, U.S.N.M. 



PLASTOPHORA SPATULATA, new species. 



Plate 39, fig. 7. 



A specimen taken by Mr. J. C Crawford at Dallas, Texas, along 

 with crawfordi Coquillett is in the shape of the ovipositor so different 

 from that species as to leave no doubt that it is distinct from it. The 

 ovipositor is very broad, horseshoe shaped, bilobed, and with a fine 

 central process. The condition of the specimen is not very good, 

 but so far as I can ascertain it resembles very closely crawfordi 

 Coquillett, and only for the very striking ovipositor I should have 

 refrained from describing it as new. The form of this organ should 

 insure the recognition of the species at once. 



One female, Dallas, Texas (J, C. Crawford). 



Type..— Cat. No. 14895, U.S.N.M. 



PLASTOPHORA ANTIGUENSIS, new species. 

 Plate 39, fig. 11. 



Male. — Yellow; frontal bristles as in crawfordi, third antennal joint 

 large, thickly pubescent, arista rather thick, as long as frons, pube.s- 

 cent, palpi yeUow, moderately bristled, thorax thickly covered with 

 short hairs, scuteUum with four bristles, the anterior pair weak, abdo- 

 men yellow at base and at apex, intermediate joints browned, second 

 segment elongate, sixth not much longer than fifth, with a circle of 

 long, rather widely placed bristles on about the middle, hypopygium 

 not exserted, several long hairs on the apices of the partly visible 

 organs, anal protuberance long, \\ times the length of sixth segment, 

 yellow with two very long curved bristles at apex; legs stout, 

 hind tibia with setulse on postero-dorsal surface, those on apical half 

 very distinct, wings as in crawfordi; lialteres yellow. 



Length, 1 mm. 



