No. 2326. THREE TRIBES OF WHNEUM0NINAE—CU8HMAN. 33 



at apex, tibiae fuscous with white annuli at base and in middle, tarsi 

 fuscous, very narrowly pale at base of first joint. 



Male. — Length 4 mm., antennae (broken). 



Differs from the female principally in color, the dark color of the 

 body being more inclined to piceous, and the red color having less 

 of the red and more of the fuscous, the legs and mouth paler, scape 

 and pedicel white, scutellum whitish; the tergites are proportion- 

 ately narrower and the impressions less distinct; hind tarsi about 

 equal in length to tibiae. 



The type is somewhat more contrastingly colored than indicated 

 in the above description, which is drawn from the homotype. 



The type is from Illinois, the homotype from Indiana, and the 

 female from Washington, District of Columbia. 



POLYSPHINCTA (ZATYPOTA) GRANULOSA Davis. 



Polysphivcta granulosa Davis, Trans. Amer. Ent. Soc, vol. 24, 1897, p. 369, female. 

 Type— Ac&d. Nat. Sci. Phila., No. 170. 



Discussion based on type. 



Allied to nigrocepJiala (Davis), from which it differs in addition 

 to the characters used in the key as follows : prescutum before notauli 

 narrow, about one-third total length of mesoscutum; first tergite 

 nearl}^ as wide at apex as long, not angulate at spiracles, dorsal 

 carinae rather strong; apical furrows of tergites weak, interrupted 

 medially, rhomboidal areas rather weakly defined. 



Piceous to black, without distinct yellow markings on thorax or 

 abdomen; mouthparts, apex of clypeus, antennae below at base, 

 tegulae, spot below and one in front white; legs as in nigrocej)Jiala, 

 but paler and lacking basal black annulus on hind tibia. 



The type is the only known specimen. 



POLYSPHINCTA (ZATYPOTA) BRAUCHERI, new species. 



Allied to nigrocephala (Davis), from which it differs as follows: 



Female. — Length 5.5 mm., ovipositor 0.5 mm., therefore consid- 

 erably larger ; temples flat ; postocellar line slightly longer than ocell- 

 ocular line, the latter about equal to diameter of lateral ocellus; 

 mesoscutum considerably longer than wide, subpolished, prescutum 

 much longer, about one-third total length of mesoscutum; second 

 tergite nearly as long as wide, the abdomen as a whole more slender; 

 nervellus curved at base ; hind basitarsus nearly as long as next three 

 combined. 



Color pattern same as in nigrocephala, but pronotum, except 

 dorsal and hind margins, and mesoscutum, except notauli and dorsal 

 impressions, piceous; antennae beneath and mouthparts paler; hind 

 femora testaceous. 



Male. — Length 5.0 mm. Very like female with abdomen more 

 slender and dorsal areas less well defiined. 

 181404— 21— Proc.N.M.vol.58 3 



