246 E. T. CRESSON. 



Six specimens. (Belfrage; Boll.) Allied to rubigmositu, from 

 which it differs by the black vertex and mesothorax, paler wings and 

 markings of abdomen, which are, however, extremely variable. This 

 may prove to be only a % variety of ruhiginosus. 



Polistes geiKTOsns, n. sp. 



■^ . — Head subsericeous; face long, dull luteous ; anterior orbits, band 

 above antennae filling up emargination of eyes, and mandibles, yellowish- 

 white or luteous; venter and occiput black; cheeks and a dot on each side be- 

 hind ocelli, ferruginous,- clypeus longer than wide, flat, sparsely and finely 

 punctured, apex angular; ridge between antennae prominent, subtuberculate 

 above; antennae long, black above, fulvous beneath, scape yellowish beneatii : 

 collar black, narrowly edged with fulvous above; prothorax fulvo-ferj-uginous, 

 black laterally, upper margin narrowly edged with yellowish ; mesothorax 

 black, with two short ferruginous stripes on anterior middle; scutellum black 

 with two ferruginous spots; postscutellum ferruginous, narrowly margined 

 with black; nietathorax transversely rather coarsely wrinkled above, with a 

 broad shallow groove down the middle, black, a slender stripe on each side of 

 groove and a spot on each flank, ferruginous; pleura black, a ferruginous spot 

 beneath tegulse and a luteous subangular mark behind anterior coxae; tegulse 

 ferruginous, fuscous at base; wings yellowish-fuscous, darker along costa; legs 

 fulvous, yellowish beneath, sericeous, four anterior coxae above, posterior pair 

 entirely and all the femora above, black ; abdomen subsericeous, fulvo-ferru- 

 ginous. a longitudinal mark on basal middle of first segment, basal margin of 

 second segment, triangularly dilated above and suddenly dilated laterally, 

 and narrow basal margin of third and fourth segments, black; apex of second 

 and following segments stained more or less with fuscous; apical segment 

 blackish, rugulose; venter black. Length .90 inch. 



Three specimens. (Belfrage; Heiligbrodt.) This maybe an ex- 

 treme variety uf pcrpIexuA. 



Polistos fexaiius, u. sp. 



9. — Dull ferruginous, sericeous; head yellow, vertex, occiput and pos- 

 terior margin of cheeks, ferruginous; clypeus subconvex, sparsely punctured, 

 sometimes tinged with fulvous at base; antennae entirely fulvo-ferruginous; 

 narrow margins of prothorax, sometimes a band at base of scutellum, postscu- 

 tellum more or less, two stripes on disk of nietathorax, a spot or stripe on each 

 side, a spot beneath tegulae, a dot beneath posterior wing and the tegulse more 

 or less, yellow; metathorax with a shallow median groove, transversely stri- 

 ated; wings yellowish-fuscous, darker along costa; sometimes the mesothorax 

 has two short discal lines; anterior coxae beneath, line on outside of four pos- 

 terior coxae, four anterior femora beneath except base, tips of all the femora 

 and outer side of all the tibiae and base of tarsi, more or less yellow, tips of 

 tarsi fuscous; abdomen strongly pale golden sericeous; rather broad apical 

 margin of all the segments, except last, even on first segment and more or less 

 strongly sinuate anteriorly on remaining segments, an angular mark on each 

 side of first segment, sometimes reduced to a dot, and a spot on each side of re- 

 maining segments, larger on second, and sometimes nearly confluent with api- 

 cal band, all yellow; all the apical bands are slightly interrupted or indented 



