NO. 2173. A REVISION OF THE BEMBICINE WASPS—PARKER. 35 



median anterior dorsal spot and dusky line in front of tubercles, 

 tegulao, broad lateral lines and U-shaped discal mark interrupted on 

 posterior middle on scutum, broad fascia on scutellum narrower medi- 

 ally, metanotum, broad curved fascia on doi-sum of median segment 

 produced medially in a pair of triangular points on its posterior 

 surface, likewise its lateral angles broadly and sides entirely, meta- 

 pleurae, mesopleurae, and mesostemum except spot in front of mid- 

 dle coxae, broad fasciae on tergites, first deeply and roundly emar- 

 ginate on anterior middle, and somewhat narrowed medially on pos- 

 terior border and acutely notched on the midhne, second ^^^th a nar- 

 row transverse median spot on either side the midhne, third, fourth 

 and fifth each with a wide but not very deep emargination on anterior 

 middle, v/liich is squarely notched with yellow on its posterior mid- 

 dle, sixth shghtly biemarginate on anterior border, apex of idtimate 

 tergite, stemites entirely except m.edian anterior black spots on ster- 

 nites 3-6, which are hidden when the abdomen is shghtly flexed, 

 coxae, trochanters except spot above, femora except stripe above, 

 tibiae except spot below on anterior pair, and tarsi, hriglit lemon 

 yellow. 



The middle femora are distinctly serrate below; the middle meta- 

 tai-si arc curved, and basally on the inner side bear three stout spines. 

 The second stemite bears a prominent tubercle and the sixth api- 

 cally on the median hne bears a distinct, somewhat triangular hump 

 or elevation. The eighth below is strongly hirsute, the middle spine 

 is long, stout and curved, and a discal spine is wanting. 



Female.— Black: Labrum, mandibles except apices, cly]3eus, lower 

 part of frons prolonged upward between antennae and narrowly 

 separated from a broad V-shaped spot about the anterior ocellus, 

 broad anterior orbits reacliing almost to the posterior orbits on 

 vertex, scape except apical dusky spot above, broad posterior orbits 

 connected across the posterior border of vertex, pro thorax except 

 median anterior dorsal spot, tegulae, lateral lines and broad U- 

 shaped discal mark on scutum, broad fascia on scutellum, 

 metanotum, median segment entirely except a narrow curved black 

 border adjoining metanotum and narrow black lines bordering the 

 oblique sutures on dorsum and posterior sm^face, sides, and venter 

 of mesothorax and metathorax, broad fasciae on tergites 1-5, fii'st 

 with a median anterior bilobed black spot, second with a median 

 elliptical black spot on either side the midline, third, fourth, and 

 fifth biemarginate on anterior m^iddle, fu-st to fourth slightly notched 

 on posterior middle, ultimate tergite except three black emargina- 

 tions at base, sternites entirely except more or less black basally 

 on 4-6, legs entirely except spots on trochanters and stripes on 

 femora above hright lemon yellow. 



Length. — 18-20 mm. 



