194 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 



Prosacantha fuscipennis AHbin. 

 Ent. Anier., in, p. 117, Ch-sh. Syn. Hym. p. 313. 



S. Leiiffth, 2.2'""'. Robust, black; thorax jiikI scntoUnm coarsely 

 niffoso punctate, opaque; head larjje, broad, shiuinj;:, vertex polished, 

 the froiis aud face coarsely, longitudinally striate. Antennie 12 jointed, 

 long, filiform, brown-black, the scape towards basal half rufous; first 

 flagellar joint the longest, the third, the shortest and emargiuated at 

 base; the joints after the third longer, very slightly in<!reasing in 

 length to the last. Legs rufous, the hind cox.e sometimes black. 

 Post- sen tellar spine large, triangular, arute. Wings fuscous or sub- 

 fuscous, the marginal vein nearly six times as long as the stignial. 

 Abdomen oblong-oval, polished, the first and second segments coarsely 

 longiludiually striated, the third feebly longitudinally striated, the 

 following smooth. 



Habitat. — Jacksonville, Fla. 



Types in Coll. Ashmead. 



Prosacantha Columbiana, Bp. nov. 



9 . Length, 2.2""". Black, shining, sparsely, faintly, minutely punc- 

 tate; the head polished, lower part of orbits, on either side of the in- 

 sertion of the antennjT; and cheeks, striated. Mandibles reddish-yellow. 

 Antenna; brown-black, the basal half of scape and tubercles pale rufous; 

 first and second joints of funicle of an equal length, twice the length of 

 the pedicel, the third and fourth transverse. Legs, including coxa?, 

 brownish-yellow. Post-scut ell ar spine acute, triangular; metapleura 

 smooth, polished. Wings subfuscous, hyaline toward base. Abdomen 

 obloug-oval, polished, the first and second segments coarsely striated, 

 the third more or less striated basally, and the rest of the segments 

 smooth, impunctured. 



Habitat. — District of Columbia. 



Types in Coll. Ashmead. 



Prosacantha bilineata, sp. nov. 



9 . Length, 1.5""". Black, shining, the thorax, excluding the scutel- 

 lum, minutely punctulate, with indications of furrows posteriorly ; head 

 highly pohshed, impunctate, with some stripe toward the mouth. Man- 

 d'bles piceous. Ant/eunaB 12-jointed, black, the extreme base of scape 

 reddish; first funiclar joint not quite twice as long as the pedicel, 

 the second, a little shorter, third and fourth, small, transverse. Legs, 

 including coxa", pale rufous. Post-scutellar spine very acute. Meta- 

 thorax with small acute teeth at the posterior angles, the metapleura 

 crenulate. W^ings hyaline, the venation yellowish. Abdomen oblong- 

 oval, smooth, shining, the first segment aud the second at base, striated. 



Habitat. — Washington, D. C. 



Type in Coll. Ashmead. 



Described from 4 specimens. 



