no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 51 



above the middle coxae continued upward along the suture between 

 the mesopleurae and metapleurae, broad fasciae on tergites, first 

 with a broad rounded shallow emargination on anterior middle, 

 second to fifth each with a wide and very shallow anterior emargina- 

 tion on either side the dorsal midline, apex of ultimate tergite, 

 sternites 1-3 entirely, broad apical fasciae on 4-6, legs entirely except 

 spots above on trochanters and femora basally, yellow. The legs are 

 of the normal form, without any special modifications. The second 

 sternite bears a pair of closely placed, sharply pointed, prominent 

 tubercles, and the eighth a prominent discal spine. 



Female. — Black: Labrum, mandibles except apices, clypeus, frons 

 below, pair of curved spots almost inclosing anterior ocellus, broad 

 anterior orbits narrowed to a point above, scape, posterior orbits con- 

 tinuous on vertex, prothorax, tegulae, broad lateral fines and pair of 

 broad discal lines narrowed posteriorly on scutum, scutellum, meta- 

 notum, dorsum of median segment except curved black fascia on an- 

 terior border, lateral angles, sides and almost all the posterior surface 

 of median segment, metapleurae, mesopleurae, and mesosternum ex- 

 cept lateral spots in front and slightly above middle coxae, tergites 

 except shallow median anterior black emargination on first, narrow 

 anterior black border on remainder, slightly waved on 3-5 and notched 

 on 6, sternites entirely except basal border of 5 and 6, legs entirely 

 except basal spots above on trochanters, and femora, yellow. The 

 clypeus, labrum, and frons are decidedly silvery, the sides of the 

 thorax less so, and even the venter of the abdomen shows a trace of 

 this. 



In both sexes the flagellum is cylindrical in form, testaceous above, 

 yellowish or testaceous below, and fighter in the female than in the 

 male. The silveriness of the face and sides of the thorax is less evi- 

 dent in the male than in the female. The pubescence is short and 

 inconspicuous. The wings are hyaline and the veins brown. The 

 pul villi are distinct. 



Length — 9-13 mm. 



The description above is made from two males and one female col- 

 lected by F. H. Snow, in Arizona. A comparison with Fox's type of 

 exigua convinces me of their identity, although the markings on these 

 specimens are somewhat more extensively developed than are those 

 on the type which is a female from Montana. 



This species stands very close to Stictiella pulla Handlirsch, from 

 which it is distinguished chiefly by the more extensive maculations. 



Habitat — Arizona, Montana. 



