MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. ^77 



ovate, the petiole stout, not longer tlian thick, fluted, the sixth autl 

 seventh segments about eijual, the eighth shorter. 



Habitat. — Washington, D. C. 



Type in Coll. Ashuiead. 



Aclista missoiiriensis, sp. iiov. 



$. Length, 2.8'"", Polished black, sparsely pubescent; antennre, 

 tegula», and legs brownish yellow. Anteuniii 14-jointed, rather stout, 

 cylindrical, tlie first Hagellar Joint Jis long as the scape, the basal two- 

 thirds excised, the following joints very slightly shortened, about thrice 

 as long as thick. Metathorax earinated. Wings subhyalin<% the mar- 

 ginal cell i)artially present, the marginal vein thrice as long as thick, 

 the first branch of radius oblique and short, the second bianch of the 

 radius present being two-thirds the length of the marginal. Abdomen 

 black, tlie second segment toward the base moreor less rufous, the ]>etiole 

 stout, as long as the nu'tathorax, rugose, with a furrow ahnig the sides. 



IlAlJITAT. — St. liOuis, Mo. 



Type in Coll. Ashmead. 



Aclista conica, ap. iiov. 



9. Length, 2'""'. Polished black, nearly devoid of pubescence; 

 antennae and legs rufous. Anteinne 15-jointed, clavate nioniliforin, the 

 first flagellar joint nuich more slender but not longer than the pedicel, 

 the joints beyond sub moniliform, transverse after the third, the ter- 

 minal joint oval, longer than the penultimate. Metathorax carinated. 



Wings subhyaline, the marginal cell entirely wanting, the marginal 

 vein more than thrice as long as thick, the first branch of radius short. 

 Abdomen conic-ovate, the petiole short, not longer than thick, with 

 faint raised lines but not distinctly fluted, the sixth and seventh seg- 

 ments about equal, longer than the preceding segment. 



Habitat. — Arlington, Va. 

 ■ Type in Coll. Ashmead. • 



Aclista rugosopetiolata, sp. nov. 



9 . Length, 2.G"'". Polished black, pubescent; the thorax rather flat, 

 the scutellum with two fovesi^ at base connected by a grooved line. 

 Antenna', IS-jointed, very stout and incrassated, the scape nearly half 

 the length of the flagellum, the first flagellar joint a little longer than 

 the pedicel and as stout, the remaining joints all transverse-moniliform* 

 the last oval. Metathorax rugose, carinated. 



Wings subhyaline, the marginal vein about thrice as long as thick, 

 the stigmal vein short, oblique, ending in a hook. Abdomen long-oval, 

 pilose toward tip and beneath, the petiole stout, longer than thick, 

 rugose and opaque, with a (ihannel along the sides. 



Habitat. — Arlington, Va. 



Type iu Coll. Ashmead. 



