220 WILLIAM H. ASHMEAD. 



% . — Length 1.5 mm. Agrees with 9 , except the head and the thorax, are 

 more metallic green, while the abdomen is rotund-oval, the third segment being 

 half as long as the second, or as long as the following segments united. 



Hab. — District of Columbia. 



Described from two 9 and one % .specimens bred from an un- 

 known Dipterous puparium found in stems of Ambrosia. 



II.4BRO€YT|TS Thomson. 

 llabrocytiiM rliotliibseni sj). u. 



9. — Length ;5.2 mm. Dull bronzed-black, the metathorax and base of abdo- 

 men cupreous: scape, pedicel, mandibles and legs, except coxae, brownish yellow ; 

 flagelluni brown-black; ocelli red. Head and thorax closely punctate, the head 

 very wide, about four and a half times as wide as thick antero-posteriorly, the 

 cheeks full, the malar suture curved backwards to the base of mandibles; clypeus 

 finely longitudinally striated, the anterior margin with a slight median sinus; 

 antennae 13-jointed. filiform, inserted on the middle of the face, the fiagellum 

 about two and a half times as long as the scape ; pedicel small, cyathiform, about 

 one-third the length of the first joint of funicle; funicle 6-,iointed, the joints 

 very gradually shortening, the first the longest, about three times as long as thick, 

 or a little longer ; the last, or sixth joint, not quite twice as long as thick ; scu- 

 tellum at apex truncate, with a slight rim ; metathorax not quite as long as the 

 scutellum. tricariuate, the lateral carinse or folds very slightly curved at the 

 middle, the spiracles large, oval, not quite twice as long as wide. Wings hyaline, 

 pubescent, the veins light brown, the marginal vein a little more than twice as 

 long as the stigmal, the postmarginal a little shorter than the marginal. Abdo- 

 men couic-ovate, a little longer than the head and thorax united, depressed or 

 flat above, subconvex beneath, the second segment about twice as long as the 

 third, the third and following segments all very nearly of an e(iual length, the 

 last conical. 



Hdb. — Roslyu, Va. 



Described from a single 9 specimen bred by Mr. Frank H. 

 C'hittenden, from the larva of Rhodobieaus V^-punctata 111. 



Habrocytus laiigiirise sp. n. 



9. — Length 2.5-3 mm. Black, with sometimes a slight metallic, or bi-onzy, 

 tinge on the disc of the mesonotuin, the metaiu)tum usually brigiiter metallic 

 green. Abdomen seneous-black. metallic blue and green at base above; scape, 

 tegulte, trochanters, knt^es and all tibiae and tarsi, except la.st joint, yellowish or 

 brownish yellow, the femora brown, the coxa; black or blue-black ; pedicel, ex- 

 cept .sometimes beneath and fiagellum brown or brown-black. Head and thorax 

 ])unctured ; antenna; 13-jointed. filiform; pedicel about half as long as the first 

 joint of funicle : tlagelbim about two and a half times as long as the scape; fu- 

 nicle 6-jointed, the joints gradually shortening, the first scarcely three times as 

 long as thick, the last not longer than thick. Wings hyaline, the veins light 

 brown, the marginal vein not quite twice as long as the stigmal. although very 

 nearly so. Aiidomen conic-ovate, a little longer than the head aiul thorax united, 

 about as in //. rhodahicni, but the sixth and seventh segments are nearly equal in 

 length ami distinclly longer than Ibc third and fourth segments. 



