no. 2173. A REVISION OF THE BEMBIGINE WASPS— PARKER. 53 



diversity of shade in the fasciae is less apparent on the female owing 

 to their deeper and brighter color. The apical segment of all tarsi 

 on the female is longer than the two preceding segments together, 

 is heavy, not flattened, rectangular in outline and thickly beset with 

 stout hair below; on the male this segment is more slender, conical 

 and comparatively shorter. The pulvilli on both male and female 

 are large and distinct and the pubescence is not at all conspicuous. 

 The wings are hyaline and the form of the three cubital cells, identical 

 in the sexes. 



I have associated here as sexes of one species Handlirsch's pulla, 

 a female, and the male of Fox's usitata. I have done this for the 

 following reasons : The pattern of their maculations is almost identical ; 

 the pulvilli are large and distinct in both cases; the form of the 

 third cubital cell is peculiar and common to both; they are of the 

 same size and are found in the same locality. The female of Fox's 

 usitata has indistinct pulvilli, the sternites wholly without fasciae, 

 and the form of the third cubital cell is distinctly different from that 

 of the male he associated with it. Furthermore, I am convinced 

 that the female referred by Fox to his usitata is the female of his 

 plana. The character of the pulvilli, the maculations and the habitat 

 all point to this conclusion. 



Habitat. — California, Washington. 



Number of specimens examined — males, 12 ; females 8. 



STICTIELLA FEMORATA Fox. 



Figs. 76, 77, 94, 109. 

 Monedula femorata Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 363, male. 



Male. — Black: Clypeus, labrum, mandibles except apices, scape 

 below, spot in front of anterior ocellus and inferior part of frons, 

 separated by a butterfly-shaped spot that above is broadly connected 

 laterally with the black of the vertex, broad anterior orbits shortened 

 above, narrow posterior orbits, posterior border of pronotum con- 

 nected on tubercles with a large spot on sides of prothorax, small spot 

 on tegulae, small spot near tegulae on scutum, lateral spots on 

 scutellum, metanotum, curved fascia on dorsum of median segment 

 more or less broken, irregular spot on mesopleurae extending on the 

 mesosternum, small spot on metapleurae, spot on lateral angles of 

 median segment, fasciae on tergites 1-6 narrowly interrupted medially, 

 apex of ultimate tergite, fasciae on sternites 1-6, legs except upper 

 side of coxae, trochanters, femora and more or less of the posterior 

 tibiae, yellow or yellowish white. 



The flagellum is testaceous beneath except the more basal joints, 

 which are yellowish; segments 6-11 seen from below are distinctly 

 carinate on the posterior border and the apical segment is flattened 



