34 PROCEEDINGS OF THE NATIONAL. MUSEUM vol.74 



apices of second and third tergites indefinitely pale; antennae black, 

 piceous at base; wings hyaline, veins brown, stigma stramineous. 



Type-locality. — Potomac Creek, Va. 



Type.— Csit. No. 40587, U.S.N.M. 



One specimen, taken May 22, 1896. 



DIAPETIMORPHA CONFEDERATA, new species 



Related to I'ufigaster^ from the above description of which it differs 

 as follows: 



Female. — Length, 10 mm. 



Joint 4 of flagellum little more than half as long as 3; thorax 

 opaque throughout; mesoscutum finely coriaceous with some stria- 

 tions along notauli and in posterior middle; scutellum margined 

 nearly to apex; mesopleurum finely rugulose-punctate, metapleurum 

 more coarsely so; venation as in ruflgaster except that nervulus is 

 slightly antef ureal and nervellus broken below middle; abdomen 

 fusiform, postpetiole and base of second tergite broader, the latter 

 less than twice as long as broad at base ; ovipositor stout. 



Head and thorax anteriorly black and white, thorax below and 

 posteriorly and propodeum, abdomen and legs red ; head as in rufi- 

 gaster except that face is not medially white ; pronotum, mesoscutum, 

 scutellum, and postscutellum as in ruflgaster except lateral spots on 

 mesoscutum are lacking, prepectus black ; mesopleurum, mesoscutum, 

 upper division of metapleurum, and apophyses paler reddish or yel- 

 lowish ; abdomen as in 7%ifiga^ter with apical . tergites somewhat 

 darker; legs entirely red, the front and middle coxae slightly paler; 

 front wing with a pale cloud or band below stigma. 



Type-locality. — Dallas, Tex. 



Type.— Csit. No. 40588, U.S.N.M. 



Two females, the type captured October 20, 1906, by W. D. Pierce, 

 and the paratype, in which the right hind leg and both antennae are 

 missing, from Biscayne Bay, Fla., where it was probably taken by 

 Annie T. Slosson. 



The red of the paratype is much darker than that of the type. 



DIAPETIMORPHA ALABAMA, new species 



In structure and sculpture very much like confederata., but thorax 

 without black except along sutures of prothorax and mesonotum; 

 wings immaculate. May be a pale variety of confederata. 



Female. — Length, 6-8 mm. ; type, 8 mm. 



Head and antennae black and white, the pattern as in ruflgaster, 

 scape pale reddish ; thorax with same yellow pattern as confederata; 

 legs and abdomen as in ruflgaster; wings immaculate. 



Male. — Smaller and more slender than female with sculpture 

 largely erased; propodeum without apophyses, but apical carina 



