196 BULLETIN lo, UNITED STATES NATIONAL MUSEUM. 



Prosacantha flavicoxa, sp. nov, 



9. Lcnfith, 2.1'""'. Black; licad wide, si»aisely piiiu'tate, shining, 

 the inner orbits and lower part of laee striated; thorax and sentel- 

 luMi rngulose, opaque, imbeseent; seape and le^is, inelndinj; all coxa*, 

 brijj;lit yellow; tlayelluni black. Antenna' 11' jointed; lirst lunielar Joint 

 abont twice as lon;n" i>^ tl'^' pedicel, 12A times as long as thick; second 

 joint shorter; third an<l fonrth minute, transverse; clnb (i-jointed, 

 about as long as the I'liniele, the joints transverse, the second a little 

 the longest joint. Postseutellar sjtine triangular, acute, horizontal. 

 Angles of nietathorax acutely spiiuMJ. Wings clear hyaline, tln^ nerv- 

 ures yellowish. Abdomen oblong-oval, })olished, black, the lirst and 

 second segments striated. 



Habitat. — Virginia. 



Type in Coll. Ashmead. 



Described from a single specimen. 



Prosacantha americana Ashm. 

 Ent. Am., in, p. IIU, ^ ; Cress. Syii. llym., p. ?13. 



S. Length, 1.2""". Black; head transverse but thick, polished, 

 the face smooth, with some t'lint strije only below the eyes, tlu» inner 

 orbits not striated; thorax and scutellum coarsely rugulose, opacpie; 

 anteoiiie long, liliform, the scape pale only at base; legs yeUow. the 

 coxie black, shining. 



Postseutellar spine small. Angles of nietathorax subacute, small. 

 Wings subhyaline, the nervures brown. Abdomen broadly oval, the 

 first and second segnieuts striated, the following smooth, polished, 

 black. 



Habitat. — Jacksonville, Fla. • 



Type in Coll. Ashmead. 



Prosacantha flavopetiolata, sp. nov. 



S . Length, 1.5""". Black, shining, very sparsely punctate; head 

 transverse, not thick, the face highly polished, impuuctate; mandibles 

 aiid legs brownish-yellow; thorax with foint indications of furrows 

 posteriorly. Antenna? long, tiliform, 12-jointed, black, the 8<;ape yel- 

 lowish beneath; the flagellar joints long, cylindrical, the second a 

 little longer than the first, the third thickened toward tip. Post-scu- 

 tellar s])ine small, triangular. Angles of nietathorax not prominent 

 or acute. Wings hyaline, the nervures pale brown, the marginal vein 

 very long and slender, the stigmal very short but ending in a little 

 knob. Abdomen broadly oval, black, shining, the petiole yellow, the 

 first and second segments striated, rest of the segments polished, im- 

 punctured. 



9 . Length, 1.2'""". Difl'ers from male in having the thorax and 

 scutellum closely puuctulate, opaque, the scutellar spine larger and 



