306 HYMENOPTERA. 



rior wings is twice longer in this species than with maciilipes and also 

 the few discal cilia of the same wing are decidedly longer than in that 

 species. Also the fore wing is uniformly fumated. 



Fore wings with the long, hair-like discal cilia arranged in about 

 fifteen longitudinal lines across the widest blade portion of the wing, 

 the marginal cilia very fine, slender and long, about one and a fifth 

 times longer than the greatest width of the wing, the latter about twice 

 the width of the blade of the wing of longipes. Proximal tarsal joints 

 slightly shorter than the combined lengths of the other three, long. 



Antennae 9-jointed, normal. Scape long and slender, as long as 

 the pedicel and first two funicle joints combined ; proximal funicle 

 joint very small, only a half the length of the pedicel and very much 

 narrower, longer than wide; second funicle joint longest of the funicle, 

 long and slender but not very long, widening somewhat distad, about 

 a third longer than the next joint which is over twice the length of the 

 first joint ; joint 4 subequal in length to 1 but wider ; joints 5 and 6 

 subequal, ovate, each somewhat longer than 4 but distinctly shorter 

 than 3. Club very much the largest joint but slightly shorter than the 

 scape. Pubescence soft and close, not conspicuous. 



From a single specimen, f-inch objective, 1-inch optic, 

 Bausch and Lomb. 



Male. — Unknown. 



Described from a single female specimen remounted from 

 a tag in the collection of the United States National Mu- 

 seum and labelled "Washington, D. C, July 30. Fredk. 

 Knab, collector." 



Habitat. — United States : District of Columbia. 



7>/^.— Type No. 13,814, United States National Museum, 

 Washington, D. C, one female in xylol-balsam. 



This species is more closely allied with zetes, but in the 

 latter the contrasting yellow thorax, the narrower fore wings 

 with the discal cilia somewhat shorter and the shorter second 

 funicle joint of the antennae are characters which readily dis- 

 tinguish the two. 



5. Polyiieina luaculipes (Ashmead). 



Cosmocoma maculipes Ashmead, 1887, p. 194. 

 Polynema maculipes (Ashmead) Girault, 1911 a, p. 22. 

 The original specimen — not the type — of this species was 

 found in the collections of the United States National Mu- 

 seum mounted on a tag ; it was labelled " Cosmocoma macu- 

 lipes Ashm. Type. Jacksonville, Fla." and had no number 



