1917] A Synopsis of EumenidcE 365 



with a median carina extending backward from the anterior margin, 

 and two impressed hnes extending forward from the posterior margin 

 dividing it into three equal parts; adjacent to the tegulas is a sparsely 

 punctate area indistinctly defined by an impressed line; scutellum 

 divided by a median impression; petiole twice as long as wide, at first 

 linear then inflated, greatest width distinctly nearer apex than base, 

 apical cordon distinct with three depressions immediately before it, 

 deeply but not densely punctate; second segment of the gaster sub- 

 petiolate, nearly as wide as long, tergite finely and sparsely punctate, 

 sternite finely and comparatively densely punctate; lateral aspect of 

 median and hind tibiae with irregular rows of spines. Black; a spot on 

 the clypeus on either side of the basal margin, carinae on inside margin 

 of the insertion of the antennae, an indistinct mark on either side of the 

 anterior margin of the prothorax, apical margin of the tegulas, a dot on 

 either side of the metanotum, apical cordon of the petiole, margin of the 

 second segment of the gaster, yellow; legs becoming brownish toward 

 tarsi; wings brownish with violet reflections. 



Distribution. — Originally described from Indiana. Saussure 

 records its distribution as follows: Conn., Pa., 111., Tenn.. 

 Ind. and Fla. The neotype is from Harrison Co., Ind., col- 

 lected by Harold Morrison. The National Museum also 

 contains other specimens from Washington, D. C. 



Neotype. — Determined by the writer. U. S. National 

 Museum. 



Zethus variegatus Saussure. 



Zethus variegatus Saussure, Henri de, Etud. fam. Vespid., vol. 1, 1852, p. 13-14, 

 Rev. and Mag. Zool., vol. 10, 1858, p. 66. 



Zethus bicolor Saussure, Etud. fam. Vespid, vol. 1, 1852, p. 17. 



Zethus spinipes, var. variegatus Saussure, Smithson. Miscel. Coll., No. 254, 

 1875, p. 30. 



Female. — Length, 14.5 mm.; wing, 12.5 mm. Differs from spinipes 

 as follows: Pronotal lobes densely punctate basally. Dorsal aspect 

 of the prothorax, a large spot under the tegulas, scutellum except margins 

 and the median line, metanotum, large spots on thg convexities of the 

 propodeum, wide apical margin of the tergite of the petiole, apical 

 margins of the tergites of the second and third segments of the gaster, 

 and the ventral margin of the second segment, yellowish; legs brownish. 



Male. — Length, 13.75 mm.; wing, 10.25 mm. Differs from the 

 female as follows: More slender. Clypeus punctate, not rugose, 

 yellow except lateral and basal margins; antennae hooked. 



Distribution. — Originally described from Pennsylvania. Spec- 

 imens in the National Museum are from the following locali- 

 ties: Md; Va; S. C; Tifton, Tift Co., Ga; and Victoria, Vic- 

 toria Co., Dallas, Dallas Co., Texas; and Washington, D. C. 



Type. — According to Saussure in the collection of M. 

 de Romand. 



