426 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



Rusclika, but may be distinguished at once by tlie rugosely sculptured 

 scutellum and the fact that the scutellum is not bidentate at apex. 



Female. — Length 6 mm. Head and thorax dark metallic green, abdo- 

 men mostly black but with the apical margin of second tergite, all of 

 third, fourth, and fifth tergites yellow, the two apical tergites black; 

 antennae entirely black; legs mostly yellowish testaceous but with 

 the femora pitchy black and the coxae concolorous with the thorax; 

 tegulae dark brown or blackish ; wings nearly uniformly light brown- 

 ish, the middle of disk a little paler ; venation dark brown. 



Head viewed from in front much broader than high and not nearly 

 so wide as thorax ; f rons and vertex rugosely sculptured ; face, cheeks, 

 and lower part of temples sparsely punctate; clypeus perfectly 

 smooth, its anterior margin very nearly straight; supraclypeal area 

 mostly smooth and very indistinctly (sometimes not at all) separated 

 from the clypeus ; ocelli large, in a very low triangle ; ocellocular line 

 not longer than the diameter of a lateral ocellus, the area between 

 posterior ocellus and eye margin deeply depressed. Mesoscutum and 

 axillae smooth and shining but with very fine punctures sparsely 

 scattered over the surface; parapsidal grooves sharply impressed, 

 complete, and finely f oveolated ; groove at base of scutellum deep and 

 coarsely foveated; scutellum rugoso-punctate, with a deep longi- 

 tudinal groove down the middle and a slightly elevated protuberance 

 at dorsal apex which is not emarginate, the transverse groove ob- 

 scured by the rugose sculpture; metanotum rugose; propodeum 

 nearly uniformly rugulose, without carinae, the spiracular furrows 

 broad and deep; sides of pronotum strongly rugose; prepectus not 

 distinctly separated from pronotum; mesothoracic spiracle plainly 

 exposed; mesopleura mostly smooth, with sparse small punctures 

 similar to those on mesoscutum but more or less strongly wrinkled 

 along the margins and on lower half, the femoral furrow deep and 

 with coarse transverse rugae. Anterior coxae rugulosely sculptured, 

 the median and posterior pairs nearly smooth; anterior and median 

 femora distinctly shorter and thicker than the posterior pair. Ab- 

 dominal petiole two and one-half to three times as long as broad, 

 rugulosely sculptured above on basal half, smooth on apical half, 

 entirely smooth beneath, nearly parallel-sided throughout most of 

 its length but rather abruptly narrowed near base, and with a deep 

 longitudinal median groove both above and beneath ; gaster somewhat 

 smaller than the thorax, mostly smooth and polished but with ulti- 

 mate and penultimate segments as well as the basal middle of fifth 

 tergite, finely punctate. 



Antennal scape, exclusive of radicle, about as broad as long ; pedicel 

 broader than long; flagellum 8-jointed, not serrate, the apical joints 

 usually a little narrower than the basal ones; first funicular joint about 



