no. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 61 



fasciae on tergites 1-6, widely interrupted on first, continuous on 

 second, interrupted medially on the remainder, lateral spots on 

 sternites 2-5 connected by faint apical lines, tarsi, tibiae, and distal 

 extremities of femora, yellow. Wings rather heavily infumated 

 somewhat more so than the wings of ventralis. Dorsum of thorax 

 and median segment finely, closely, and evenly punctured, punctures 

 of mesopleura somewhat larger; ultimate tergite closely and more 

 heavily punctured, punctures less numerous on the apical median 

 area. Intermediate femora carinate below; short but evident tooth 

 on inner distal margin of posterior coxae; second ventral abdominal 

 segment bears a short but conspicuous basal median carina. 



Female. — Resembles the male in general appearances and colora- 

 tion, and likewise has the characteristic tooth on the inner distal 

 margin of the posterior coxae. The ultimate sternite is carinate 

 medially and the ultimate tergite bears a pygidial area set off by 

 conspicuous lateral ridges and sparingly punctured. The ultimate 

 sternite extends beyond the lateral margins of the tergite apically in 

 the form of prominent rounded angles. This character distinguishes 

 this species from all others except burmeisteri. 



Length. — 11-14 mm. 



The variation in the markings or in their color, as far as it is possible 

 to judge from the number of specimens at hand, is not great. All 

 males and the one female have the labrum black and the clypeus 

 yellow with the lower margin bordered more or less widely with black 

 which is nearly divided by a V-shaped prolongation of the yellow 

 above. On one male the black margin is reduced to an extremely 

 narrow apical border. The scape and first two segments of the 

 flagellum are yellow below or may be entirely yellow, the extent and 

 the intensity of the black above being variable. The anterior orbits 

 are broad but greatly shortened above; the posterior are very narrow. 

 The thoracic markings are constant; the coxae and trochanters are 

 invariably black; the black on the femora varies in the males some- 

 what and the posterior tibiae may also be more or less dusky. The 

 tibiae and tarsi of the females may be also more or less ferruginous ; 

 the males show but little of this color. The lateral spots on the 

 sternites may or may not be connected by narrow apical lines. The 

 fascia of the second tergite is usually continuous, and when not so 

 the interruption is very narrow. The fasciae posterior to the second 

 are successively more widely interrupted medially, and the more 

 posterior ones may also be abbreviated laterally, consequently 

 appearing as lateral spots. On one male, however, all the fasciae 

 on the tergites, even that on the first, are continuous. 



Habitat. — Louisiana, Mississippi, Texas, Georgia, Florida, Kansas, 

 and Wisconsin. 



Number of specimens examined — Males, 8; females, 4. 



