ABT. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PAEKER 89 



tion, second, third, and fourth each with a pair of dorsal anterior 

 emar^inations ; sternites 1-5; pair of broad longitudinal spots on 

 sixth; the legs, except a black spot on each trochanter, black stripe 

 on posterior side of intermediate and anterior femora, a black stripe 

 on posterior side of anterior tibiae and four black spots on anterior 

 metatarsus; hriglit yellow. 



The fiagellum is testaceous in color, darker above than below and 

 lacks evident pits or spines. The apical segment is slightly curved 

 and abruptly pointed at the apex. The anterior metatarsus is 

 dilated and flattened and bears on its posterior border four blacli 

 lobes. It also bears on its posterior border a comb composed of 

 numerous thickly set, evenly developed dark spines. The interme- 

 diate tibia, at its anterior apical extremity, is drawn out into a spine- 

 like process which bears a short spine. Tlie intermediate femur is 

 dentate and the metatarsus on its posterior border near the apex 

 bears a comb of several short stout spines. The second sternite bears 

 a prominent, laterally compressed median process and the sixth, a 

 small, narrow, pointed tubercle. The eighth sternite ends in a flat- 

 tened median spine that is distinctly bifurcate at the apex. The 

 basal half of the clypeus on the mid line is slightly carinate and on 

 either side is plainly depressed. 



Female. — Black : labrum ; mandibles, except tips ; clypeus ; f rons to 

 level of anterior ocellus, except a pair of black spots; broad posterior 

 orbits not meeting above; prothorax; legs entirely; sides of meta- 

 thorax, mesothorax, and propodeum; broad U-shaped mark and 

 lateral lines on scutum ; fascia on posterior border of scutellum, from 

 the median point of which a narrow line runs forward ; broad fascia 

 on metanotum ; broad curved fascia and lateral angles of propodeum ; 

 broad continuous fasciae on tergites 1-6, first with deep bilobed 

 median anterior emargination, 2-5 each with a pair of dorsal anterior 

 emarginations, and sixth with a pair of small widely separated 

 anterior emarginations; sternites 1-5 wholly, except a median an- 

 terior black spot on 3-5 ; pair of lateral spots on sixth ; yellow. 



The scape of the antenna is entirely yelloAv. The first two seg- 

 ments of the flagellum are yellow below and dark above. The rest 

 of the flagellum is testaceous, being lighter below than above. 



The wings on both sexes are hyaline. The pubescence is short and 

 sparse, that on the clypeus giving it a silvery sheen. The form of the 

 clypeus in the female is the same as that on the male. There is some 

 variation in the maculations on tlie several females. On all of them 

 the basal half of the clypeus is of a brighter yellow than the apical 

 half. On one specimen there is a pair of small black spots on the 

 base of the clvpeus. On a second the yellow is more extensive than 

 on others; the posterior orbits are united at the vertex and the 



