no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 2 7 



ment continued medially downward on its posterior surface, sides of 

 median segment entirely or in part, lateral angles of same, meta- 

 pleurae, mesopleurae, and mesosternum almost entirely, broad fasciae 

 on tergites 1-5, the first broadly and squarely emarginate anteriorly 

 in the middle, sometimes cut through leaving a medial spot as in the 

 male, second with medial emargination usually narrow and much 

 prolonged posteriorly to right and left, third to fifth with more shal- 

 low emarginations, which have their posterior middle notched with 

 yellow, apex of ultimate tergite, first sternite entirely, fasciae on 2-5 

 broadest on two and narrowest on five, apex of ultimate sternite, legs 

 except spot on coxae, trochanters, and femora, above and rarely spot 

 on tibiae above, and tarsi, lemon yellow, the color somewhat deeper 

 on the legs than elsewhere. 



Length. — 12-15 mm. 



The flagellum below varies from yellow to testaceous, and above 

 from testaceous to black. In most specimens the mesopleurae and 

 mesosternum are wholly yellow; on a few the mesosternum is more 

 or less black, and on two it is entirely black. The second and third 

 sternites may be entirely yellow or may show more or less of a black 

 basal border. 



In both sexes the wings are hyaline and the veins fuscous. The 

 pubescence is short, sparse, and not conspicuous. On the male the 

 markings are lighter than on the female and are not so extensively 

 developed. The fasciae on the tergites are narrower on the male 

 than on the female, and the emarginations are broader and apparently 

 deeper. On one male from Kansas all the tergal fasciae are contin- 

 uous, and below the yellow color is as extensive as on the brightest 

 of the females. This species is remarkable in the superficial resem- 

 blance of the female to Steniolia duplicata Provancher. 



Habitat. — Virginia, North Carolina, Missouri, Kansas, Texas, New 

 Mexico, Arizona, and Lower California (Handlirsch) . 



Number of specimens examined. — Males, 5; females, 15. 



STICTIELLA FORMOSA Cresson. 



Figs. 47, 48, 81, 97, 98. 



Monedula formosa Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 221, female, 



male. 

 Monedula speciosa Handlirsch, Sitz. Akad. Wissensck. Wien ; Math.-Nat. CI., 



vol. 99, 1890, p. 140, male, female. 

 ? Monedula speciosa Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 366. 

 Monedula speciosa Cameron, Trans. Amer. Ent. Soc, vol. 34, 1908, p. 236, male. 



Male. — Black: Labrum, clypeus, mandibles except apices, scape, 

 first and second flagellar segments below, entire frons except pit of 

 anterior ocellus and pair of spatulate lines that run downward and 

 inward from the vertex and are narrowly separated below the ante- 



