318 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



second fuiiichu' Joint is dilated, tlio club G-jointed, tl;e last en laiji'cd, ob- 

 long, the other joints niouilitorni, Thoiax ovoid, polished, the niesono- 

 tal furrows only slightly indicated x)osteriorly, the basal tii) of the 

 middle lobe slightly elevated, n[>ou the base of the scutelliun; the 

 parapsides with a slight tnft of pubescence at base. Scutelhun higli, 

 transverse, convex. Metapleura covered with a white, glittering ])n- 

 bescence. Legs brownish-piceous; front legs, tips of mid. lie and pos- 

 terior tibia^, and all tarsi honey yellow. Abdomen ]>ointed in 9 ,a lit 

 tie longer than the head and thorax together; shorter and oblong-oval 

 in S , the i)etiole and foveohe at base of second segment striated; the 

 third and following segments, in the S ,with a row of punctures at base. 



Habitat. — Arlington, Va. 



Types in National IMusenm. 



Described from several specimens, reared June IC and IT, 188(1, from 

 a Trypetid gall on Vernon i(( noccborKvcnfiis. 



Polygnotus floiidanus, sp. iio\ . 



S . Length, 1.4""". Black; antennie, except the club, and the legs, 

 except the posterior pair, yellow; club black; posterior coxa*, femora, 

 and tibie dusky; wings hyaline, almost devoid of pubescence, the teg- 

 ulai black. 



The heaci is wide between the eyes and highly polished; mandibles 

 l)iceous; pal[)i pale. Antenme 10-jointed, the pedicel long, as long as 

 the 3 funiclar joints united, the third funiclar joint the widest, club joints 

 black, moniliforin, the last fusiform, twice as long as the ])reccding, 



Mesonotal furrows indicated jMisteriorly ; scutellum cushion-shaped, 

 the metapleura covered with a white pubescence. 



Abdomen pear-shaped, not as long as the thorax, smooth, polished, 

 excei)t the petiole, which is wider than long, striated, and some striie at 

 base of second segment. 



Habitat. — Jacksonville, Fla. 



Tyi)e in Coll. Ashmead. 



Distinguished by the color of the legs and the peculiarity of its an- 

 tennie, the pedicel being nunsually long for a species in this genus. 



Polygnotus euurae, sj). lutv. 



S. Length, 1.60™"'. Black, i)olishcd; head two and a half times as 

 wide as thick antero posteriorly, the vertex posteriorly not or very 

 faintly aciculated. Mandibles rufous. Antennaj 10-jointed, brown- 

 black; pedicel one and a half times as long as thick; first funiclar joint 

 snmll, rounded; second longer than thick, slightly curved; club (>- 

 jointed, the joints, except the last, oval-moniliform, slightly pedicel- 

 late, the last cone-shaped, a little stouter and about twice as long as 

 the preceding. Thorax ovoid, polished, the mesonotal furrows indica- 

 ted posteriorly. Scutellum transverse, convex, sparsely covered witU 



