230 WILLIAM 11. ASHMEAD. 



C'YRTOGASTER Walker. 



t'yrtogaster citripes sp. n. 



% . — Length 1.6 mm. Kobust, golden-green ; antennje, except a small spot on 

 pedicel at base above and the club which are fuscous, palpi, mandibles, except 

 teeth, and legs, except coxae, lemon-yellow. The mesonotal furrows extend ante- 

 riorly only to the middle of the mesonotum ; metanotum puqilish, tricarinate, 

 but with the surface smooth. Wings hyaline, the veins brownish yellow, the 

 marginal vein not quite twice as long as the stigmal, the postmarginal a little 

 shorter than the marginal. Abdomen spatulate, the petiole short, stout, rugose, 

 with a median carina, the second segment very large, occupying most of the re- 

 maining surface, the remaining segments, except the third, which is very short, 

 all retracted and not at all visible. 



Hab. — Fort George, Florida. 



Cyrtoga»$ter oc<*i<leutaIis sp. n. 



9 . — Length 1.5-1.7 mm. Aeneous-black, or dull bronzed green ; the head in 

 front somewhat purplish or bluish; head and thorax scaly punctate; scape and 

 pedicel, except extreme base of the former, teneous ; flagellum dark brown. Legs, 

 except coxfe, brownish yellow. Head transverse, about four times as wide as long 

 antero-posteriorly, the frons very wide and scarcely impressed medially ; antennse 

 subclavate, inserted below the middle of the face on an imaginary line with the 

 base of the eyes; pedicel a little longer than the two ring-joints and the first 

 joint of funicle united, the funicular joints a little wider than long; mesotho- 

 racic furrows indicated only anteriorly ; metanotum smooth, tricarinate, with a 

 short raised line at base between the middle and lateral carinse. Wings hyaline, 

 the veins fuscous or brownish, the marginal vein not quite twice as long as the 

 stigmal. Abdomen short, ovate, pointed at tip, the petiole about three times as 

 long as thick, finely shagreened, with a delicate median carina, the second seg- 

 ment occupying one-half of the length of body of abdomen, its apical margin 

 with a very slight median sinus; segments 3 and 4 subequal. 



% . — Length 1.25-1 5 ram. Variable from a bronze-green, through blue-green 

 to blue-black, or even geneous-black ; antennae and legs, except coxse, yellow, a 

 spot on pedicel above at base and the club moi'e or less dusky , funicular joints 

 1 and 2 about as long as wide, ;{-6 a little wider than long ; mesothoracic furrows 

 indicated only anteriorly. Abdomen spatulate. the petiole as long as or a little 

 longer than the hind coxaj, shagreened, the median carina wanting or distinct 

 only at base, second segment occupies about half of the whole surface of the 

 body, with a slight median sinus on its apical margin, third segment distinct, the 

 following very short, u.sually retracted. 



Hab. — Indiiuui, Texas, District of Coluinhia, Virginia, South 

 Dakota and Colorado. 



This species has been bred by Prof. F. ]\I. Webster from Osclnls 

 varlabilhi or 0. ambrosa Loew, mining the stems of wheat. 



POL-YCYRTUS West wood. 

 Polycyrtiii^ flori4laiiu»« sp. n. 



%. — Length 2 mm. Bright metallic green, closely i)unctate ; scape towards 

 apex and pedicel teneous; flagellum short, light brown, the joints transverse; all 

 coxae and femora metallic, the knees, tibiie and tarsi, except last joint, yellow or 

 brownish yellow. Head transverse about four and a half times as wide as tliick 

 antero-posteriorly; antennte unusually short, the scajjc extending only to the 

 middle ocellus, while the fiagellum is also short, subclavate, with transvei-se 



