86 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.59. 



XIPHYDRIA HERITIERAE, new species. 



In the rufous head and general color the female recalls X. ruficeps 

 Moscary, but it does not answer the description in all ways, being 

 distinguished by the more joints to the antenna, the pale base of 

 the wings, and different color of the legs. The male would go to 

 rvfipes Smith in Konow's key, but the sculpture, especially that of 

 the abdomen, is quite different from that species. 



Female. — Length, 16.5 mm. Anterior margin of the median part 

 of clypeus with a low, rounded median tooth, laterally the clypeus 

 has a rounded lobe-like tubercle; sides of face depressed (except at eye 

 margin) and finely granular; area between bases of antennae convex, 

 irregularly reticulate ; frons to height of lateral ocelli striato-reticulate : 

 middle fovea shallow with sloping walls; ocelli in a low triangle 

 well below the supraorbital line; postocellar and ocellocular lines sub- 

 equal; cheeks, temples, and head behind the ocelli smooth polished: 

 antennae 17-jointed, scape strongly curved, flattened on the lateral 

 surface, pedicellum subequal in length with the first joint of flagellum, 

 more than half as long as the scape, curved and somewhat compressed 

 laterally; flagellum hairy, very strongly tapering, the first joint dis- 

 tinctly longer than fourth, the joints decreasing in length toward 

 apex, basal part of flagellum thicker than scape or pedicellum; pres- 

 cutum and scutum coarsely reticulate; notauli well defined, more or 

 less distinctly foveolate; axillae mostly granular; scutellum shining 

 and with distinct, large, separated punctures; mesepisternum closely 

 punctato-striate; mesepimeron with strong oblique striae; propo- 

 deum and base of second tergite shining and with distinct punctures 

 which are closest medianly; apical part of second tergite, all of the 

 next five, and basal part of eight opaque, closely punctured; apical 

 part of eight and entire ninth tergite shining, and with scattered 

 irregular, setigerous punctures; ninth tergite elongate, but rounded 

 apically ; sheath rather short, strongly tapering apically ; third cubital 

 but little shorter than the second, receiving both interradius and 

 second recurrent close to base; nervulus at basal fifth. Black, with 

 bluish reflection in bright sunlight; head and first two joints of an- 

 tenna rufous ; two spots on dorsal median part, and a spot on pos- 

 terior ventral angle of pronotum, a small circular spot on side of 

 second tergite, apical margin of eight tergite, lateral spot on apex of 

 ninth tergite yellowish-white; legs black; anterior tibiae reddish: 

 basal half of hind tibiae, hind basitarsus and extreme base of inter- 

 mediate tibiae yellowish-white; wings hyaline, beyond the basal 

 vein brownish; venation black. 



Paratypes exhibit the following variations: Length, 12-20 mm.; 

 ventral and posterior (lateral) margins of pronotum yellowish. 



Male. — Length, 12 mm. Antennae lS-jointed, base of flagellum 

 not so distinctly broader than the scape and pedicellum as in female ; 



