188 AMERICAN HYMENOPTERA. 



1, . — Clypens, face as far up and on a line with the emar<iination of the eyes, 

 narrow posterior orbits broader beneatli, and mandibles yellow; clypeus flat; 

 antennae long, pale beneath, dark above, scape yellowish beneath ; margins of 

 prothorax, basal margin of scutellum, postscutellum, two longitudinal lines on 

 disc of metathorax, sometimes a lateral spot beneath tegulge, space between four 

 anterior coxse, coxai beneath all lemon-yellow. Length 18 mm. 



Hab. — Georgia, Florida, Mi.ssi.ssippi, Texas. 



t*. vai'iatus Cress. 9 • — Strongly sericeous, black ; a transverse, subangular 

 line above antennae; posterior orbits broader beneath, and mandibles, except tips, 

 yellow; clypeus subconvex, sparsely punctured, ferruginous, more or less broadly 

 yellow at apex; cheeks sometimes ferruginous; antennse ferruginous, black 

 above ; prothorax ferruginous, black on extreme lateral corner and narrowly 

 margined anteriorly and posteriorly with yellow ; mesothorax and pleura, except 

 yellow spot beneath tegulje, entirely black ; scutellum and postscutellum ferru- 

 ginous, margined at base with yellow; metathorax black, with four longitudinal 

 yellow stripes, the lateral one sometimes slightly undulate, disc longitudinally 

 sulcate and finely transversely wrinkled : tegula? fulvous, margined with yellow. 

 Abdomen strongly sericeous, fuscous or black, varied with dull ferruginous, espe- 

 cially on the second segment; apical niargin of each segment dilated laterally 

 and slightly interru])ted medially, and an irregular spot on each side, largest on 

 the second segment yellow ; beneath ornamented much as above. Length 18 mm. 



'J, . — Face and clypeus flat, and yellow as far up and on a line with emargina- 

 tion with the eyes, cheeks beneath broadly yellow; antennse long, yellowish 

 beneath, apex black. Thorax without any ferruginous colors; sides of prothorax 

 and pleura anteriorly beneath pale yellow; scutellum sometimes with only a 

 lateral yellow dot at base; lateral stripes of metathorax sometimes wanting. 

 Abdomen darker than in the female, sides of the second segment with a large 

 ferruginous blotch enclosiiig a yellow spot; lateral margin of the first segment 

 yellow; disc of the second, third and fourth ventral segments with a large trian- 

 gular yellow mark, apical margins also yellow. Length 18 mm. 



Hab. — Texas. 



P. iiavajoe Cress. <^ . — Head pale yellow, the venter, occiput and tips of 

 mandibles back; a yellow spot on each side confluent with the orbits; clypeus 

 rounded and ciliated anteriorly, sparsely punctured and pubescent ; cheeks tinged 

 with fulvous ; antennae ful vo-ferruginous, the middle of flagellum black. Thorax 

 velvety black ; posterior border of the prothorax broader in front, tegulfe and 

 scutellum ferruginous; the mesothorax has sometimes a faint stain on each side; 

 metathorax pubescent, obliquely striated, with a deep, central, longitudinal 

 channel. Abdomen longer than the head and thorax, sericeous, the first and 

 second segments above and beneath, except apical margins, broader on the second 

 segment, and the basal margin of the third segment above and beneath black ; 

 the remainder lemon-yellow ; the anterior half of the apical margin of the second 

 segment is fulvous above, shading gradually into the yellow, sometimes this mar- 

 gin is entirely fulvous; the third and remaining segments have a faint, central, 

 longitudinal, fulvous streak and a lateral spot of the same color, that on the third 

 segment sometimes very distinct. Length 18-20 mm. 



Hab. — California, New Mexico, Arizona. 



