326 BULLETIN 4r>, UNITED STATES NATIONAL MUSEUM. 



twice as long as thick, siibpedicellate. Thorax long-ovoid, smooth, 

 shining, the furrows distinct; scutellum smooth, shining, convexly 

 high; metapleura bare; tegulje black. Wings hyaline, nearly bare or 

 but slightly pubescent. Legs brown-black, the tarsi paler, all the 

 coxa' distinctly black. Abdomen oblongoval, nearly twice as wide as 

 the thorax, the petiole rugose, subpubescent. 



Habitat. — Richfleld Springs, vN^. Y. 



Type in National Museum. 



Described from 1 S specimen, reared February 9, 1887, from aa 

 Aphis on Chenopodium album. The broad abdomen and the length of 

 the club Joints readily distinguish the species. The Aphis from which 

 this species was bred was undoubtedly infested with Cecidomyious 

 parasites, upon which the Platygasterid is a secondary parasite. 



Platygaster gracilis Ashiu. 

 Can. Ent., xix, }>. 132; Cress. Syn. Hym., p. 250. 



S. Length, 1.5""". Black, .shining; the head posteriorly micro- 

 scopically punctulate; face smooth, highly polished, with a slight cen- 

 tral impressed line from the middle ocellus. Antennje 10-jointed, black ; 

 pedicel long, yellowish at extreme tip ; first funidar joint .small, second 

 somewhat swollen, slightly curved and shorter than the first club 

 joint; club 6-jointed, cylindrical, the joints twice as long as thick. 

 Thorax long-ovoid, smooth, shining, the furrows very distinct; meta- 

 pleura sericerms; tegulie bliick. Wings long, hyaline, pubescent. 

 Legs rust-brown, the anterior pair more yellowish, the middle and pos- 

 terior femora and tibiie dusky toward tips; all coxa; black. Abdomen 

 oblong-oval, narrowed toward base, as long as the thorax, the petiole 

 more or less pubescent. 



Habitat. — Jacksonville, Fla. 



Type in Coll. Ashmead. 



Platygaster aciculatus, sp. nov. 



$ . Length, 1.4""". Black, shining; vertex, occiput, and cheeks finely 

 shagreened; face transversely aciculated; sides of prothorax, mesono- 

 tum, mesopleura beneath the wings and the metapleura all distinctly 

 longitudinally aciculated ; the parapsides, scutellum, and the lower por- 

 tion of mesopleura smooth, polished. Antennie 10-jointed, rufopiceous ; 

 the flagellum subclavate ; pedicel longer and stouter than the first and 

 second funiclar joints together, the latter scarcely longer than thick, 

 the following joints to the last transverse, the last short, conic. Par- 

 apsidal furrows deep, distinct. Scutellum elevated, cushion-shaped. 

 Legs rufopiceous ; tips of anterior femora and their tibiae and the 

 articulations of the middle legs yellowish. Wings clear hyaline, en- 

 tiiely devoid of pubescence. Abdomen oval, smooth, polished, the 



