64 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. G3. 



sculptured however, the lateral lobes of the mesonotum polished; 

 scutellum not quite so strongly convex as in filicornis, otherwise iden - 

 tioal in shape and sculpture; metapleurae, propodeum laterally, first 

 tergite and sternite (the former laterally), and second tergite and 

 sternite basally (the former in the foveae), densely covered with 

 rather long silvery pubescence; abdomen about as long as the head 

 and thorax united, broadly elliptical, as wide as the thorax, the seg- 

 ments behind the second proportionately sliorter than in Ji^^corm.s; first 

 tergite a little over twice as wide as long, the anterior and posterior 

 edges moderately elevated; median area well defined, with several 

 indistinct longitudinal carinae (sometimes none) ; second tergite as wide 

 apically as long, narrower basally, the side,; curved; foveae broad, 

 short, moderately deep, unsculptured, the area between them narrow, 

 with a short median carina; terminal segments as m filicornis; wings 

 hyaline, extending the length of the last three segments past the apex 

 of the abdomen. Black; antennae and legs brown, the front tibiae 

 and all tarsi (except the last joint of each) tinged with yellow. 



Male. — ^Length 1.2 mm. Pedicel less than twice as long as wide 

 medially, swollen; third joint half as long as the fourth, as wide as 

 long, slightly narrower than the fourth ; fourth about one and one- 

 third times as long as wide, narrower than the pedicel, not much 

 emarginated basally; following joints to the tenth subequal in length 

 and width, about one and one-half times as long as wide; joint the 

 longer than the second, conical, pointed, widest at the base, the sides 

 nearly straight; abdomen shorter than the head and thorax united, 

 conex above and below, shaped as in the female, except that 

 segments three to ten are relatively shorter; wings extending the 

 length of the terminal six segments past the apex of the abdomen. 



Type locality. — Fort Garland, Colorado, 



r^pe.— Cat. No. 2301, U.S.N.M. Type female and allotype male 

 selected. 



Redescribed from the type series, three females and two males. 

 One of the females has the antennae lost; otherwise the types are in 

 perfect condition. According to Ashmead these specimens were 

 reared June 25, 1883, from a Cecidomyid gall on sage bush, collected 

 by L. Bruner. They bear the number ''3120o, June 18-25, 1883." 



The carinae between the abdominal foveae are subject to variation. 

 In one female they are numerous and extend a little beyond the 

 apices of the foveae. Usually they are few, two or three, and do 

 not reach beyond the foveae. 



30. PLATYGASTER CALIFORNICA (Ashmead). 



Polygnotus caZi/or/KCN.'* Ashmead, Bull. 45, U. S. Nat. Mns., 1893, p. 321. 



Female. — ^Length 1.5 mm. Very close to colorademis, identical 

 except in a few particulars; the anterior edge of the first tergite not 

 at all elevated, the median area polished, without a central carina; 



