no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 1 3 



nae, broad anterior orbits narrowed above, very narrow interrupted 

 posterior orbits, spot on anterior and medial coxae below, sometimes 

 spot on mesosternnm just behind anterior coxae, anterior femora 

 anteriorly for the most part, medial and posterior femora on anterior 

 surface distally, tibiae except stripe on posterior surface, pale greenish 

 yellow. Spot on tubercles, spot on tegulae, pair of triangular spots 

 laterally on scutellum, short fascia on metanotum, fascia of first ter- 

 gite broken into a pair of median rounded spots and a pair of large 

 lateral spots, fasciae on tergites 2-6 continuous and undulate, that 

 on second extended forward on either side of the midline in the form 

 of an inwardly directed tooth, ultimate tergite apically, lateral spots 

 on sternites 2-6, and tarsi more or less, white. 

 The apical segment of the posterior tarsus is black and the remaining 

 segments distally more or less so ; the distal half of the ultimate seg- 

 ment of the middle tarsus is also black. The head, thorax, basal 

 joints of the legs including the femora, first segment of the abdomen 

 above and first and secbnd below are densely covered with a long 

 white pubescence. On the posterior part of the abdomen the pube- 

 scence is shorter and less conspicuous. The flagellum at the union of 

 the segments is distinctly notched posteriorly and most evident at 

 the distal end of segments 5-9. The somewhat prominent areas seen 

 on segments 6-1 1 posteriorly lack the pits found on duplicata. The 

 middle femora are dilated apically and the spine at the distal end in 

 front is strongly curved. Seen from in front the basal half of the 

 middle metatarsus appears curved or emarginate on the inner side and 

 the distal half dilated, due to the presence of a broad but thin carina 

 on the inner surface running somewhat obliquely downward and for- 

 ward to the tip of the joint. The second sternite bears a distinct 

 tooth-like process and the eighth ends in three short very hirsute 

 spines. At the base of the middle one on the ventral surface there is 

 a short blunt process from which two carina diverge basally. The 

 dorsal aspect of this ventral plate is characterized by a semicircular 

 crest continuous with the base of the outer spines and enclosing a 

 prominent pit at the base of the middle spine. 



Female. — Black: Clypeus, labrum, mandibles except tips, scape 

 and first two flagellar segments below, frons below insertion of an- 

 tennae, broad anterior orbits narrowed above, narrow interrupted 

 posterior orbits, posterior margin of pronotum united with tubercles 

 from which a line extends downward, spot on tegulae, spot on anterior 

 and middle coxae below, anterior and posterior stripe more or less well 

 developed on anterior and middle femora, posterior femora distally, 

 tibiae except spot on posterior surface, and coxae, yellow, the color 

 deeper on legs than elsewhere. Triangular lateral spots on scutellum, 

 fascia on metanotum, fascia on first tergite broken into a pair of 

 rounded medial spots and broad lateral spots, undulate continuous 



