336 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



piiiifturos; a row of creuate puiictiircs along the liind margin of the 

 Luesopleura. Antenna' 13-jointed, bhick, the basal joint reddish, robust, 

 partially inclosing the small second joint. Wings subfuscous, the uerv- 

 ures fuscous, the marginal cell very short, about one-fourth the length 

 of the stigma, the internal venation distinct as fuscous streaks. Ab- 

 domen not as long as the thorax, the petiole very short, grooved, black; 

 the second segment at base with a median furrow, and three grooves 

 on either side; terebra fully as long as the abdomen, a little curved, 

 longitudially striated along the sides. 



In the S the head and thorax are most frequently black, although 

 sometimes more or less piceous or reddish, the coxje black or dusky, 

 the tarsi most frequently fuscous or at least tinged, the abdomen dusky 

 at apex and ending in two short prongs; otherwise as in the 9 . 



Habitat. — United States generally. 



Specimens in National Museum, Koyal Berlin Museum, Coll. Ameri- 

 can Entomological Society, and Coll. Ashmead. 



A common species, somewhat variable in size and color. 1 have 

 seen Patton's type of P. cremdatns in Coll. American Entomological 

 Society, and there is no doubt of its being a synonym of this species. 



Dr. Clarence M. Weed has sent me quite a large series collected in 

 Ohio, and I have seen specimens from various parts of the country. 



Proctotrypes pallidus Say. 



Lee. Ed. Say's Worts, I, p. 3«2; idem., ii, p. 725; Asbni. Eat. Am., in, p. 99; Cross. 



Syii. Hyiii., p. 248. 



$ 9 . Length, G to 8""". Eeddish-testaceous, closely resembling P. 

 caudatus, but with the metathorax more finely rugose, with a median 

 carina, the sculpture not longitudinal, the antenuji? Avholly testaceous or 

 brown, the second abdominal segment with fine stria' at extreme base. 



In the S only the meso- and metai)leura are blackish, the coxae pale, 

 the tarsi not dusky, apex of abdomeu very slightly dusky, often concolo- 

 rous with the rest of the abdomen, while the prongs are shorter than in 

 caudatus. 



Habitat. — United States. 



Specimens in Coll. American Ent<nnological Society, National Museum, 

 and Coll. Ashmead. 



Proctotrypes iTifigaster Pro v. 



Nat. Can., xii, p. 2G3; Faun. Ent. Can., p. 561, <? $ ; AsLm. Ent. Am., in, p. 99; 



Cress. Syii. Hym., p. 248. 



S . Length, 5""". Head and thorax black; legs reddish-yellow, the 

 tarsi slightly dusky; abdomen reddish-yellow, the petiole, extreme 

 apex of second and foUowing segments black. Antenme long, cylin- 

 drical, blaek, the basal joint rufous beneath. Thorax siuootli; collar 

 at sides, niesopleura beneath the teguhe and anteriorly and posteriorly, 



