200 AMERICAN HYMENOPTERA. 



dorsal segment without yellow, fourth and fifth dorsal segments likewise, ven- 

 tral segments, excepting the second, without yellow, the latter having a yellow 

 triangular mark on each side of the posterior margin ; legs as in microstictus, ex- 

 cepting the yellow line on the posterior tibiae which is absent; a large reddish 

 spot anterior to the yellow spot on the metathorax ; the first abdominal segment 

 excepting the yellow marks testaceo-ferruginous. 



Type. — University of Kansas. 



Type locality.— Clark Co., Kansas, 1962 ft. 



One female captured in June, by F. H. Snow. 



Odynerus percainpanulatiis n. sp. 



Second abdominal segment abov.e almost as in toltecus. Postscu- 

 tellum bituberculate. 



% . — 8 mm. — Head. — Very as in toltecus, vertex and front rather elevated and 

 sparsely punctured, the punctures there of three to four puncture widths apart. 



Clypeus. — With shallow, rather elongate punctures, one to two puncture widths 

 apart. Prothorax distinctly margined anteriorly and angulate laterally on the 

 anterior margin. The postscutellum with a salient transverse ridge, which is 

 deeply emarginate in the middle, making the postscutellum bituberculate. Meta- 

 thorax with the posterior aspect rather deeply concave, the basin so formed not 

 surrounded by a very distinct crest. Very closely, coarsely punctured, with a 

 rather rugose appearance and dullish white. The pleura have most of the punc- 

 tures separated by a shining tegument. The pronotum and dorsulum with 

 stronger, close punctures than are found on the face. The pleura punctured in 

 much the same way as the dorsulum, with the anterior margin forming quite a 

 salient ridge. The scutellum rather rugulose, with a median longitudinal fur- 

 row. The abdomen is much as in toltecus, but the first segment is rather compact 

 and not in the form of an elongate bell, and is not quite as wide as the second, 

 nor has it a shallow depression above. The edge of the third segment, while by 

 no means so decidedly reflexed as the edge of the second segment, is, however, 

 slightly reflexed. The punctuation of the first, second and third abdominal seg- 

 ments above is uniformly coarse, and the punctures but slightly separated by 

 shining tegument. On the corresponding ventral segments the punctures are 

 more separated. 



The fourth, fifth and sixth dorsal segments are successively less distinctly and 

 closely punctured, and with smaller punctures than the preceding, while the 

 apical or ultimate segment is practically impunctate. 



Color. — Ferruginous. Occiput, vertex, dorsulum, lower half of pro- and meso- 

 pleura, sutures of metathorax and extreme base of first, and second abdominal 

 segments mostly black. Face yellow, excepting the black which extends from 

 the insertion of the antennge as a line to the black of the vertex and parallel or 

 practically parallel with the lower margin of the eye emargination. The black 

 of the vertex coming down on the face to an imaginary line drawn from a little 

 above the beginning of the emargination of the eye above straight across to the 

 corresponding point on the other side. Thus the black on the face isolates a cen- 

 tral funnel shaped yellow mark, and lateral yellow marks filling the emargina- 

 tions of the eyes. 



