no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 47 



original description was made. The unusual development of the 

 pubescence on this species and on villosa, the similarity of the wing 

 venation of the two and their common habitat raise the qifestion 

 as to whether this may not be the female of that species. I should 

 not be surprised if later investigation should prove such to be the 

 case. 



Habitat — New Mexico, Arizona. 



Number of specimens examined — Males, 0; females, 16. 



STICTIELLA TENUICORNIS Fox. 



Figs. 69, 70, 90. 

 Monedula tenuicornis Fox, Froc. Acad. Nat. Sci. Phila., 1895, p. 368, female. 



Male. — Black: Labrum, clypeus, mandibles except apices, inferior 

 part of frons, large spot about anterior ocellus connected by a ver- 

 tical line with the yellow of the frons below, broad anterior orbits, 

 posterior orbits continued somewhat on the posterior border of ver- 

 tex, prothorax except median anterior dorsal spot, broad lateral lines 

 and U-shaped discal mark, which may be broken, on scutum, tegu- 

 lae, fascia on scutellum broad laterally, metanotum, broad, curved 

 fascia on dorsum of median segment, lateral angles broadly and sides 

 of same, metapleurae, mesopleurae and mesosternum except small 

 spot in front of middle coxae, broad fasciae on tergites 1-6, the first 

 squarely and deeply emarginate on anterior middle and deeply and 

 triangularly emarginate on either side of the posterior middle, second 

 with a transverse, arcuate, medial, anterior black spot and three 

 shallow posterior emarginations, third with a narrow medial ante- 

 rior emargination greatly extended to right and left on middle of 

 tergite and with three posterior emarginations, the middle one deep- 

 est, fourth, fifth, and sixth similar to third, but with anterior emar- 

 gination modified and posterior black border reduced, apex of ulti- 

 mate tergite, first and second sternites entirely, broad fasciae on 3-6 

 narrowed medially and sometimes also laterally, coxae except spot 

 on posterior pair below, trochanters except spot above, femora except 

 stripe above, tibiae, and tarsi, bright lemon yellow, of deeper shade 

 on the legs. 



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

 and basal segments of flagellum below, frons below, V-shaped spot 

 in front of anterior ocellus, broad anterior orbits, posterior orbits 

 broad below and extended on vertex, sometimes entirely across, pro- 

 thorax except medial anterior dorsal spot, tegulae, lateral fines and 

 U-shaped discal mark, sometimes broken into three spots, on scutum, 

 fascia on scutellum narrowed medially, metanotum, broad fascia on 

 dorsum of median segment prolonged medially on posterior surface, 

 its sides, lateral angles, and most of its posterior surface, metapleurae, 

 mesopleurae, mesosternum except spot in front of middle coxae, broad 



