no. 2173. A REVISION OF THE B EM B WINE WASPS— PARKER. 73 



turn, lateral angles of median segment, fasciae on tergites 1-5 inter- 

 rupted medially and the more posterior ones shortened laterally, 

 lateral spots on sternites 2-5 usually connected by narrow apical 

 lines, yellow, more or less dashed or suffused with ferruginous. The 

 legs are ferruginous, the basal joints usually darker than other parts 

 but not so black as in the male. 



The flagellum is more or less ferruginous, especially below, but in 

 some specimens it is almost entirely black. The wings are heavily 

 infumated, especially in the case of specimens from Georgia. The 

 sixth tergite bears a well-defined pygidial area, set off by distinct 

 lateral ridges as shown in figure 138. 



Length. — 10-15 mm. 



This species shows considerable variation. In the female the 

 clypeus is invariably yellow, but the labrum varies from yellow 

 through ferruginous to black; in the male the clypeus may be 

 entirely yellow or entirely black, but is usually black with a yellow 

 apical border. The labrum of the male is generally black. Variation 

 in the maculations is less pronounced, though the dorsal markings 

 on the abdomen of the females from Texas are much better developed 

 than are those on the females from Georgia. On one female from 

 Texas there is a small pair of discal marks on the dorsulum. In no 

 case do we find the mesopleurae maculated in either sex and rarely 

 the dorsum of the median segment. 



Habitat. — Georgia, Texas, Kansas. 



Number of specimens — Males, 9; females, 8. 



BICYRTES MESILLENSIS Cockerell. 



Figs. 130, 131. 



Bembiduta capnoptera Handlirsch, var. mesillensis Cockerell, Davenport Acad. 



Nat. Sci., vol. 7, 1898, p. 142. 

 Bembidula mesillensis Cockerell, Can. Ent., 1899, p. 255. 



Male. — Black: Labrum, irregular spot on base of mandibles, 

 apical half of clypeus, scape below, broad anterior orbits not reaching 

 vertex, narrow posterior orbits, posterior border of pronotum includ- 

 ing tubercles, narrow lateral lines on scutum above base of anterior 

 wing, lateral spots on scutellum, transverse fascia on metanotum, 

 lateral angles of median segment, comparatively broad fasciae on 

 tergites 1-6 interrupted medially, the first broadest and slightly 

 attenuated medially, the remainder attenuated but not shortened 

 laterally, lateral spots on sternites 2-6 united by faint lines on apical 

 margins of sternites, distal extremities of femora, most obvious on 

 first pair, tibiae, and tarsi, yellow. First and second joint of flagellum 

 yellowish below, remainder below ferruginous; wings slightly infu- 

 mated, darkest at apical end of median cell of anterior wing; antennae 

 with slightly prominent specialized areas on segments 4-12 below; 



