Ko. 2173. A REVISION OF THE BEMBICINE WASP8— PARKER. 95 



at the apex. The flageUum is cylindrical, the first segment smallest 

 in diameter, the last three sUghtly flattened and decreasmg in width 

 imperceptibly to the apical segment, which is very shghtly curved 

 and rounded at the apex. Segments 9-11 bear conspicuous pits and 

 7-8 smaller ones. The seventh is spinose on the posterior surface. 

 The middle femora are dentate below, and the spur at the apex of the 

 middle tibia is curved. The middle metatarsus is unusually short 

 and is bent in outline. The wings are hyaline, veins brown. The 

 pubescence on head, thorax, and base of abdomen is white, short, and 

 sparse, elsewhere on abdomen almost lackmg. The second sternite 

 bears a large prominent hooked process; the third, an evident 

 median carina; the fifth, a pair of very small approximated tubercles 

 apically; the sixth, a low broad transverse process whose posterior 

 face is at right angles to the plane of the segment. With respect to 

 this process on the sixth sternite the species resembles B. helfragei. 

 The seventh sternite is greatly narrowed, but it is not reduced to the 

 form of a spine. 



Length. — ^16 mm. Described from a single specimen. 



Habitat — Florence, Arizona. 



Type. — Male, in collection of American Entomological Society of 

 Philadelphia. 



BEMBIX RUGOSA, new species. 



Figs. 216, 217. 



Female. — Black: Labrmn, mandibles except apices, clypeus, an- 

 terior orbits, scape and flagellmn below, small rounded spot on 

 either side of anterior ocellus, narrow posterior orbits, sides of pro- 

 thorax imited by a narrow line on posterior border of pronotum, 

 tegulae, lateral lines and a pair of short anterior discal lines on scutum, 

 fascia on scuteUum narrowed medially, fascia on metanotmn, pair of 

 short, broad, oblique lines on dorsum of median segment, spot on 

 mesothorax, broad fasciae on tergites 1-4, first slightly emarginate 

 on anterior middle, second, third, and fourth each with five emargi- 

 nations on anterior border — i. e., a shallow median notch, a deeper 

 square indentation on either side of this and laterally on either side 

 a shallow sinuation, pair of spots on fifth, lateral spots on sternites 

 2-4, the last pair quite small, apex of ultimate sternite, femora dis- 

 taUy, tibiae, and tarsi, pale greenish or creamy yellow. 



The antennae are cylindrical, long, and slender. The clypeus is 

 strongly arched, shows a silvery reflection and on the midline at 

 the apical border it bears a very slight depression. The labrum 

 is unusually long and slender, as shown in figure 217. The legs 

 are also slender and longer than usual. The spur at the apex of 

 the middle tibia does not reach the middle metatarsus and the spine 

 on the posterior side is almost equally well developed. The wings 

 are hyaline, the veins brown. The puV;osconce oji liead, thorax, and 



