ART. 5 GENERIC REVISION OF THE FOSSORIAL. WASPS — PAEKEB 181 



on pronotum; tubercles; tegiilae; lateral line on scutum above 

 tegula; pair of small discal spots on scutum; curved fascia on pos- 

 terior border of scutellum; fascia on metanotum; curved fascia on 

 dorsum of propodeum extended in two points on posterior surface; 

 lateral angles of propodeum; three spots in vertical line on meso- 

 pleura; broad fasciae on tergites 1-5, interrupted medially on 1-4, 

 much narrowed toward interruption on first tergite, less so on tergites 

 2-4. broad, continuous fascia on 5; sixth tergite entirely; narrow, 

 apical fascia on first sternite; large, lateral spots on second sternite, 

 joined by a narrow, apical fascia; broad fasciae on sternites 3-5, 

 each enclosing a darker median area; sixth sternite entirely; and 

 legs; yellow or yellow and ferruginous. 



The markings on the abdomen and thorax are in the main rich 

 yellow, but on all parts of the body there is a tendency toward 

 ferruginous. The combination of yellow and ferruginous is best 

 seen on the clypeus and on the legs, the basal parts being ferrugi- 

 nous and the distal parts yellow. The scape is yellow below, fer- 

 ruginous above. The flagellum is ferruginous, growing darker 

 toward the distal end, where the last four segments are black, except 

 that the ultimate segment is tipped with ferruginous. The clypeus 

 and frons are covered with short, silvery pubescence. On mesopleura 

 the pubescence is white and somewhat longer. Elsewhere pubes- 

 cence is practically wanting. The wings are without infumation. 

 The punctures on the scutum and scutellum are somewhat coarse 

 and uniform in distribution. The sixth tergite lacks a pygidial 

 area and lateral ridges. 



Length 18 mm. Described from a single female from Chapada, 

 Brazil. 



Type (female). — In the Carnegie Museum at Pittsburgh. Pa. 



EXPLANATION OF PLATES 



The figures of the wings were made from projections of the wings mounted 

 in balsam under cover glasses, and are therefore exact in outline and propor- 

 tions. The degree of magnification in the projections was approximately the 

 same for all wings, so that the relative sizes of the figures show the relative 

 sizes of the wings of the species selected as illustrations. All other figures 

 are camera lucida drawings made directly from the parts illustrated, but the 

 scale of magnification is not uniform so that the sizes of the figures do not 

 show the relative sizes of the parts illustrated. In the case of the males the 

 specimens were relaxed and the genitalia were then removed, mounted on 

 paper points, and permitted to dry. All figures of male genitalia were mnde 

 from such mounts; no balsam mounts of genitalia were used. In assembling 

 the flgiires on the several plates the author has endeavored to group them 

 together in such manner as will render them most helpful in the determina- 

 tion of species of these wasps. 



