444 [June 



tegulae; scutellum coarsely punctured, with a transverse yellow line: 

 postscutellum also with a transverse yellow line; pleura prominent, 

 closely punctured, with a large, irregular, yellow mark in front and a 

 small rounded spot of the same color behind it; metathorax minutely 

 sculptured, subsericeous, abruptly truncate behind, with a central dot. 

 and a large spot on each side emarginate above, yellow; tegulae also 

 yellow. Wings narrow, pale yellowish-hyaline, very faintly tinged with 

 dusky on the apical margins; nervures honey-yellow. Legs black, 

 with whitish pubescence ; tips of the four anterior femora, the anterior 

 tibia?, a line on the middle tibiae in front, a spot on the posterior coxae 

 above, and the upper surface of their femora, yellow; extreme tips of 

 the anterior tibiae, most of the four posterior tibiae above and all the 

 tarsi, dusky ferruginous; the four posterior femora compressed, smooth, 

 polished, and edged beneath ; their tibia? depressed above, and covered 

 with dense subappressed, claw-shaped teeth or spines ; the tarsi slightly 

 spinose, and fringed with long whitish setae. Abdomen sparsely punc- 

 tured and shining, pubescent on the sides; first segment with a trans- 

 verse yellow band, sinuate behind and deeply emarginate on the basal 

 middle ; second segment with a large subquadrate yellow mark on each 

 side at base, dilated on each extreme side to the apical margin along 

 which it extends in a very narrow, subobsolete line the whole width of 

 the segment ; third segment yellow, with a transverse, slightly undu- 

 late, narrow, black band near the apex, not continued to the lateral 

 margin, but with a black dot on each side just above its termination ; 

 fourth and fifth segments also yellow, with a transverse black spot on 

 each side ; apical segment black, depressed, densely and longitudinally 

 striated, with the apical margin rather broadly rufous and rounded ; 

 venter black, shining; the narrow apical margins of the second, third 

 and fourth segments, a spot on each extreme side of the second seg- 

 ment, a broad band at the base of the third segment, interrupted in 

 the middle, and a narrow transverse line on each side at the base of the 

 fourth segment, all yellow. Length 5 lines; expanse of wings 8£ lines. 

 One specimen. 



Genus TIPHIA, Fabr. 

 1 . Tiphia inornata. Say. 



Tiphia inornata. Say, Long's Second Expedition, ii, p. 331. 



Two % specimens. 



-'. Tiphia tarda, Say. 



Tiphia tarda, Say, Bost. Jour. Nat. Hist, i, p. 300. 



One 9 specimen. 



