320 BULLETIN ir., UNITED STATES NATIONAL MUSEUM. 



Polygnotus Icevicoliis, s|i. nox . 



$ . Length,! lilack, sliiniii;^; tlir head traiisNci-jst' witli the lat- 

 eral ocelli twice their width iVoiii the eye margin; antciiiia' brown, the 

 scai)e toward a|)e.\ and the pedicel at tip yellow ish; Ici^s infons; wini;\s 

 hyaline; mesoiiotal furrows distinct. Tlic antenna' are lO-jointcd, the 

 scape clavate, as long as the tlagelluni; ])e(licel obconic, as long as the 

 first and second joints united, the latter closely Joined, swollen or 

 dilated; club 6-jointed', all the joints, exce])t th«^ last, transverse, the 

 last conical, a little more than twice tln^ length of the ])enultiniate. 

 I'ronotani }»erfectly smooth, highly jxtlishcd, the metapleura with a 

 fiue silvery pubescence. Abdomen oblong oval, polished, the petiole 

 short, striated. 



Habitat. — District of Columbia. 



Type in Coll. Ashinead. 



Taken by Mr. E. A. SchNvarz. 



Polygnotus astericola, sp. nov. 



$ 9 . Length, 0.80 to 1""". Black, jtolished; head thrice as wide as 

 thick antero-posteriorly, the vertex not or very faintly aciculated, the 

 face smooth, ])olis]ied. ^landibles rufo-})ice()Us. Antenna'. 10-Jointed, 

 dark brown; i)edicel twice as long as thick, first funiclar joint minute, 

 pale, a little longer than thick; second larger, very little longer than 

 the third; club 5-jointed, ratiu'r slender, tiie joints about as wide as 

 long. In the $ the second funicle joint is as long as the pedicel, a little 

 curved, dilated and truncate at ti}), the club 0-jointed, the joints oval- 

 moniliform, slightly pedicellate, the last cone-shaped, a little stouter 

 and twice as long as the preceding. Tliorax ovoid, polished, the 

 mesonotal furrows indicated posteriorly, the basal tip of the middle 

 lobe very slightly elevated, the para]>sides with a tuft of pul)escence 

 at base. Metapleura sericeous. Teguhe black. AMugs hyaline, i)u- 

 bescent. Legs, including coxa-, rufo piceous. the trochanters, knees, 

 tips of tibia', (the anterior tibia' almost entirely) and all tarsi, honey- 

 yellow. AbdouK'U not longer than the head ami thorax together, ob- 

 loug-oval, broader than, and not so jtointed as in /*. rernonia', the basal 

 segment and the foveohe on the second striated; the $ abdomen shorter 

 and without roM' of ]»unctures on the ventral segments. 



Habitat. — Ilolderness, ]S". H. 



Types in National ]\Inseum. 



Described from several speciinens, rearetl 3Iay U4, 18S4, from a Ceci- 

 domyiid gall on Aster, collect«'d l)y A. Koebele. 



Polygnotus coloradensis, sj). nov. 



$ 9. Length, 1""". Black, i)<>lishe(l; head thrice as wide as thick 

 antero-posteriorly, the vertex very faintly, microscopically shagreeiu'd, 

 the face smooth, highly polished, the lateral ocelli as far fiom the mar- 

 gin of the eye as to the front ocellus. Mandibles piceous-black. An 



d 



