NO. 2173. A RSrWION OF THE BEMBICINE WASPS— PARKER. 21 



tubercles, spot on mesopleiira posterior to tubercles, pair of small 

 lateral spots on scutellum, sometimes wanting; spot on lateral angles 

 of median segment, fascia on first tergite broad, interrupted and 

 deeply emarginate medially, second interrupted medially and emar- 

 ginate on either side of the midline anteriorly, third broken mto four 

 spots, fourth and fifth reduced to lateral spots; lateral spots on stern- 

 ites 2-4, sometimes 2-5, femora distally; tibiae except more or less of 

 posterior surfaces, tarsi, yellow or pale greenish yellow. 



Length.— 24:-2S mm. 



This handsome insect is our largest representative of the Bem- 

 hicini. The variation in the m.arkings is not wide but is more preva- 

 lent in the male than in the female. The distribution of the hght 

 and dark areas on the labrum and clypeus of the male differs with 

 almost every individual, the prevailing pattern being set forth in the 

 description above. The shade of the color of the markings is quite 

 varied on the male, less so on the female. The wings are sUghtly 

 infumated. The coxae, trochanters, and femora, except more or less 

 of the apical ends, are black; the tribiae and tarsi are yellow, with more 

 or less black below; the apical segment of the tarsi :s somewhat dilated 

 and in the male is mostly black. The pubescence is nowhere con- 

 spicuous except on the vertex, and the sculpturing on the body is 

 fine and close. The labium in both sexes is covered with coarse, 

 shallow, scattered punctures, and the apical portion of the ultimate 

 tergite of the male is quite similarly punctured. The ultimate tergite 

 of the female is densely and rather coarsely punctured and the apical 

 portion appears somewhat rugose. 



Hahitat. — Pennsylvania, New Jersey, Georgia, Louisiana, Texas, 

 New Mexico, Oklahoma, Kansas, and Illinois. 



Number of specimens examined — males, 26; females, 19. 



STICTIELLA, new genus. 



Monedula Handlirsch and Authors (part). 



Type of the genus. — Monedula formosa Cresson. 



The species belongmg to this genus are on the whole more slender 

 than those of the genera Stictia and Bemhix, resembling more closely 

 those of the genus Steniolia. In length they vary from 10 to 20 milU- 

 meters. The head when viewed from in front is broader than long. 

 In the majority of species it is about as broad as the thorax; m a few, 

 however, it is distinctly narrower than the thorax. The compound 

 eyes are large, strongly arched and naked. The facets near the inner 

 border are very shghtly larger than those on the outer. The inner 

 margins of the eyes are usually subparaUel, occasionally divergent 

 at the vertex. The lower margin reaches the base of the mandible. 

 The precipitous posterior surface of the head is concave and the 



