MONOGRAPfr OF TIIK NORTH AMERICAN PROCTOTRYPID.E. 377 



ovate, the petiole stout, not ]oii«;ei' than tliiek, tinted, the sixth and 

 seventh segments about equal, the eighth shorter. 



Habitat. — Washington, D. C. 



Type in Coll. Ashmead. 



Aclista missoiiriensis, sp. nov. 



S. Length, 2.8""". Polished black, sparsely pubescent; autenufe, 

 tegula", and legs brownish yellow. Antenna' ll-jointed, rather stout, 

 cylindrical, the first tlagellar joint as long as the scape, the basal two- 

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

 as long as thick. Metathorax carinated. Wings subhyaline, the mar- 

 ginal cell partially present, the marginal vein thrice as long as thick, 

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

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

 black, the second segment toward the base more or less rufous, the jictiolc 

 stout, as long as the metathorax, rugose, with a furrow along the sides. 



Habitat. — St. Louis, Mo. 



Type in Coll. Ashmead. 



Aclista conica, sp. nov. 



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

 antenna; and legs rufous. Antenn;e 15-jointed, clavate-moniliform, the 

 first fiagellar joint much more slender but not longer than the i)edicel, 

 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 |)etiole 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, 2.0""'. Polished black, pubescent; the thorax rather flat, 

 the scntellum with two fovene at base connected by a grooved line. 

 Antennte 15-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. 



AVings 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 channel along the sides. 



Habitat. — Arlington, Va. 



Type in Coll. Ashmead. 



