NORTH AMERICAN HYMKNOPTKRA. Oo9 



the rnargiual vein twice as long as the stignial, tlie latter a little shorter than the 

 postmarginal. Abdomen sessile, pointed-ovate, very slightly longer than the 

 head and thorax united, depressed and bare above, keeled and clothed with short, 

 sparse white hairs below. 



%. — Length 1.5 mm. Agrees with the female, except the liead and thorax 

 above, are decidedly metallic green, almost entirely devoid of the peculiar short, 

 white hairs; tiie flagellum is slightly shorter, subfiliform and more hairy ; the 

 tibiae paler, very indistinctly obfuscated at the middle; the marginal vein less 

 than twice the length of the stignial, while the abdomen is oblong-oval, onlj^ 

 two-thirds the length of the thorax. 



Hab. — Morgiintowii, W. Va. 



Described from one S and two $ specimens bi-ed hy Piof. A. D. 

 Hopkins from a Dipterous gall on box elder. Comes nearest to C- 

 aiithoiiomi Ashm., but is quite distinct in the color of head and 

 thorax, and in the denser white vestiture. 



AirriEROIiYTl'^i Thomson. 

 1872.— Hym. Scand. vol. v, p. 158. 

 (Type A. pimctatns Thorns.) 

 Arllirolytiis piinplsi^ sp. n. 



9- — Length 1.5-2.2 mm. Dull bronze-green, confluently punctate; scape 

 brownish yellow; legs, except coxa?, reddish yellow; abdomen acute-ovate, 

 somewhat longer than the head and thorax united, aeneous-black. Head about 

 three times as wide as thick antero-posteriorly, the cheeks a little wider than 

 half the width of the eyes; flagellum subclavate, finely pubescent, the pedicel 

 longer than the two ring-joints and the first funicular joint united, or a little 

 longer than the 3-jointed club; all funicular joints, except the last, longer than 

 wide, the last fully as wide as long. Thorax as in Arthrolytus (SemioteUns} clisio- 

 campx Fitch, the metanotum short, tricarinated. 



'J,. — Length 1.6-2 mm. Head and thorax metallic green, with purplish or 

 l)luisli reflections, confluently punctate; antennae and legs yello-.v, the flagellum 

 very slightly darker than the scape, subclavate, pubescent, the funicular joints, 

 except the first, all wider than long. Abdomen much depressed, oblong-oval, 

 shorter than the thorax, seneous or metallic, and sometimes, but not always, with 

 a pale spot at base. 



Hab. — Morgantown, W. Va. 



Described from several specimens bred by Prof. A. D. Hopkins 

 from Fbaphi inquisitor Say. 



Subfamily EuFicLMiNiE. 



Kll|»l':i^WlIS Dalman. 



KiipoliiiiiM cleri sp. n. 



9 . — Length 4.5 mm.; ovipositor 1 mm. Head, scape, pedicel, i)ronotum. 

 streak on mesonotuni, mesoplenra, except posteriorly, metapleura and hind coxae, 

 blue; thorax above and abdomen bronzed black; flagellum black; anterior tro- 



TRANK. AM. KNT. SOC. XXI SKPTEMBEK. 1894. 



