NO. 1927. DESCRIPTIONS OF NEW HYMEN OPTERA, G— CRAWFORD. 171 



femora in front, tips of all femora and rest of legs testaceous; abdo- 

 men longer than the head and thorax combined. 



Male. — Unknown. 



Type-locality. — Morgantown, West Virginia. 



Type.—Qfxi. No. 14581, U.S.N.M. 



Described from two specimens; as noted above, the type is one of 

 the series of specimens labelled as "type" of C. dendrodoni by 

 Doctor Ashmead, and has the record Hopkins, W. Va., No. 4555, 

 and the note shows it to be a parasite of Polygraplius rnfipennis; the 

 paratype fi'om the same locality also labeled "type" of C. den- 

 droctoni, has the record Hopkins, W. Va., No. 5762. 



CECIDOSTIBA THOMSONI, new species. 



Female. — Length about 4.5 mm. Brilhant green, the mesonotum 

 somewhat bronzy; head and mesonotum, together with pleurae, with 

 thimble-like punctures; lower part of face rugoso-punctate, clypeus 

 separated from face by a depressed hne; back of head from a pomt 

 not far back of ocelli, semicu'cularly striate; scape reddish, pedicel 

 slightly darker, rest of antennae dark brown, fu-st joint of funicle dis- 

 tinctly longer than pedicel, the followmg joints successively decreas- 

 ing in length, the last subquadrate; apical part of scutellum more 

 coarsely punctured than basal, the line of jommg abrupt, distmct; 

 metanotum medially concealed by the apex of the scutellum; propo- 

 deum without a neck, with distmct lateral folds, medially fuiely 

 rugose, laterad of' tliis as far as the folds, punctured; the extreme 

 apex with a few coarse rugas; laterad of the folds the surface almost 

 smooth, with a few weak wi'inkles; spiracles small, oval; upper part 

 of mesepimeron in the shape of a triangle impunctured, metapleurae 

 finely rugulose; wings almost hyaluie, marginal vein shorter than 

 postmargmal (about as 20:35); stigmal (including knob) shghtly 

 shorter than marginal; stigmal knob about one-third the total length 

 of vein, surrounded by a small infuscated band; coxas green, tro- 

 chanters, all femora at bases and apices, tibias and tarsi, yellowish; 

 front femora, except a brown stripe on front, gi-een; middle femora 

 brown with a gi-een stripe beneath, hind femora green outside, inside 

 deep brown; abdomen elongate, finely reticulately luieolated, last 

 dorsal segment about as long as penultimate. 



Male. — Length about 3.25 mm. Similar to the female; front and 

 middle legs almost entirely reddish-testaceous, the front femora 

 shghtly infuscated, hind femora green outwardly, inside fuscous; 

 abdomen aeneous, the base and apex gi^eenish, near base with a large 

 testaceous spot; propodeum longer than in female, and %vith a median 

 cai'ina. 



Habitat. — Columbia Fails, Montana. 



