1865.] _ 131 



a narrow band which is widened at the sides ; beneath, rufo-piceous, 



brightest at the base. 



" Hdh. — Georgia." 



29. Cerceris elegans, Smith. 



Cerceris elegans, Smith, Brit. Mus. Cat. Hym. iv, p. 467. 



'•'■Male. Length 3 lines. — Black, coarsely punctured; the face be- 

 low the antennae, the scape in .front, and the mandibles, yellow, the 

 tips of the mandibles ferruginous ; the anterior margin of the clypeus 

 rounded ; the anterior angles of the face produced into small quadrate 

 lobes; the flagellum and scape behind ferruginous. Thorax: a spot 

 on each side of the collar and the tegulas in front yellow; wings smoky- 

 hyaline and beautifully iridescent; the legs yellow, with the coxae and 

 the femora at their base more or less rufo-piceous ; the metathorax 

 very coarsely rugose. Abdomen : the two basal segments ferruginous, 

 the apical margin of the second segment yellow ; an elongate yellow 

 spot on each side of the following segments on their apical margins, 

 the spots widest at the margins of the segments and pointed within. 



u //ot._East Florida." 



:iO. Cerceris rufo-picta, Smith. 



Cerceris rufo-picta, Smith, Brit. Mus. Cat. Hym. iv, p. 467. 



" Male. Length -t lines. — Black, coarsely punctured; the face yellow 

 below the antennae ; the anterior margin of the clypeus black, crenu- 

 lated, and angular ; the anterior margin of the face has on each side 

 an angular filament close to the eye; the mandibles yellow, their tips 

 ferruginous ; the antennae ferruginous; the flagellum fuscous above to- 

 wards the apex, the apex pale. The prothorax, tegulfe, scutellum, 

 postscutellum, with sometimes a spot on each side, and the legs, ferru- 

 ginous; the wings fusco-hyaline, the apical margins of the anterior 

 winsis darkest. Abdomen : the two basal segments ferruginous ; the 

 apical margin of the third with a narrow ferruginous band ; the fourth 

 and following segments more or less banded at the sides with ferrugi- 

 nous or sometimes with reddish-yellow. 



"J5a6.— East Florida." 



.31. Cerceris Dufourii, Guer. 



Cerceris Dufourii, Guer. Icon. Reg. Anira. iii, p. 444. 

 " Black ; front of the head, base of the mandibles, and the first 

 joint of the antennae in front, yellow. Antennae black, with the first 

 half fulvous. . Two small fulvous spots on the posterior margin of the 

 prothorax ; tegulaj and margin of the scutellum, yellow. First segment 

 of the abdomen fulvous ; the second fulvous, with a large yellow mar- 

 gin, hollowed out in the middle, and separated from the preceding by 



» 



