316 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



fis wide as tliiclv, tlie veit«^x i)ost('rioily not or very faintly acieulated. 

 Aiiteimai lO-joiiited, black, tlic Hajiellum slender, twice as long' as the 

 scape; pedicel about as long and thick as the second club joint; lirst 

 funiclarjoint very minute, second and third, longer, equal; clubo-jointed, 

 the lirst joint a little shorter and narrower than the second ; vSecond, third 

 and fourth equal in length, very slightly longer than thick, the last cone- 

 shaped, longerthan thei)receding. In the S thepedicel isnot longer than 

 the second funiclar joint ; the first funiclar joint is annular, fully as wide 

 as the pedicel, the second funiclarjoint is a little shorter than the first 

 club joint; club G-jointed, cylindrical, the last joint enlarged, fusiform, 

 all the other joints pedicellated, about equal in length, cylindric, about 

 twice as long as thick. Thorax o\<)id, highly polished, the mesonotnl 

 furrows distinct posteriorly for half the length of the nu'sonotnm, the 

 parapsides at base with slight tuits of glittering white hairs. Scutel- 

 lum high, convex, sparsely pubescent ]iosteriorly. JNTetapleura bare, 

 not jK'rfectly smooth. IVIetanotum very short, with a dcej) central 

 groove. Teguhe black. Wings hyaline, covered with a short i)ubes- 

 cence. 



Legs black or piceous-black, the tip of anterior tibia> and the anterior 

 and middle tarsi brownish. Abdomen polished, pointed in the 9 and 

 scarcely longer than the head and thorax united; in the S oblong oval; 

 in both f-exes the i)etiole is bare, fluted, the second segment with two 

 long, striated foveohe at Itase. 



Habitat. — May wood, 111. 



Types in National Museum. 



Described from several s])ecimens, reared January 22 and rebruary 

 1 and 3, ISilO, by Prof. O. S. Westcott, from a willow (lecidomyiid (.I.S7/- 

 naptu^ sp.). 



Polygnotus huachucae, sp. iiov. 



$ 9 . Length, O.SO to 1.40""". Black, polished ; head about thrice as 

 wide as thick antero posteriorly, the vertex posteriorly showing faint 

 traces of aciculatioiis. Mandibles piceous. Antenna' lO-jointed, black, 

 the flagellum one and a half times as long as the sca[)e; pedicel 

 a little longer than the first and second funiclar joints together; first 

 funiclar joint very minute, pale; second and third longer, the second 

 the larger; club 5-jointed, the first joint smaller than the three follow- 

 ing, Avhich are a little wider than long, rounded at base, truncate at 

 tip, the last cone-shaped, a little longer than the preceding. lu the $ 

 the llagellum is not quite twice as long as the scajie, the pedicel equal 

 in length with the second funiclar joint, first funiclar joint annular, 

 second not quite as long as thick, obliquely truncate at tip, club 

 G-jointed, covered with a short, grayish i)ubescence, the joints sub- 

 moniliform, the last coiie-shai)ed, not quite twice as long as the i)re- 

 ceding. Thorax ovoid, ])olislu'd, tlu' niesonotal furrows indicated oidy 

 posteriorly, the lateral lobes i)ostcriorly bare, without tufts of hairs. 



