122 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



pointed. The genital stipites are distinct in shape, yellow in color, 

 hirsute and weakly chitinized. 



Female. — The shade of color and the character of the maculations 

 on the female are almost the same as those on the male. As is usual 

 in the case of these wasps the maculations on the female are better 

 developed than on the male; the orbits are more extensive and the 

 black on the legs and abdomen reduced. The pubescence is similar 

 to that on the male with the silveriness on the frons more evident. 

 The sides of the apical emargination of the ultimate tergite are pro- 

 duced into short but evident spines. As in the case of the male the 

 ultimate segment of the flagellum is truncate apically and slightly 

 curved. 



Length. — 12-14 mm. 



The black mark on the mid-dorsal area of the first tergite of the 

 type is replaced on the allotype by an anterior emargination ; on the 

 paratypes this mark is obscure or wanting. On one paratype the 

 first two flagellar segments are yellow below and on two others the 

 lateral spots on the scutellum are united on the midline. 



Habitat. — California, Arizona. 



Number of specimens examined — Males, 3; females, 3. 



Type and allotype.— C&t. No. 19672, U.S.N.M. Paratypes in the 

 collection of the University of Kansas. 



MICROBEMBEX HIRSUTA, new species. 



Figs. 220, 223, 224. 



Male. — Black: Tubercles and narrow line on posterior border of 

 pronotum joining them, tegulae, lateral lines on scutum, pair of discal 

 marks on same, pair of large lateral spots on scutellum, metanotum, 

 curved fascia on dorsum of median segment, postero-lateral angles 

 of same, very small spot on mesopleurae, tergites 1-7 almost entirely 

 triangular lateral marks on sternites 2-5, distal part of femora, tibiae 

 more or less especially on posterior pair, basal part of metatarsi of 

 second and third pair of legs, greenish yellow. The wings are hyaline. 

 The pits on segments 6-8 of the flagellum are lacking. The process 

 on the second sternite is characteristic of this species; it is short, 

 blunt, not backwardly prolonged and is hirsute. The genital stipites 

 are also very hirsute and are distinct in form from those of monodonta. 



Female. — Black: Labrum except apex, mandibles except apices, 

 clypeus except a pair of black basal spots, scape below, short anterior 

 orbits, narrow posterior orbits, tubercles jomed by a narrow band 

 across the posterior border of pronotum, tegulae, lateral lines on 

 scutum, large lateral spots on scutellum, fascia on metanotum, 

 curved fascia on dorsam of medain segment, broad fasciae on tergites 

 1-5, first very slightly sinuate on anterior middle, remainder slightly 

 bisinuate on anterior border and with a slight median notch, sixth 



