04 rROCEIWINGS OF THE NATIONAL MUSEUM. vol.49. 



ALLOBRACON, new genus. 



Plate 34, figs. 5a, 5b. 



Head transverse, smooth; eyes very large, protruding, very slightly 

 emarginate opposite the antennae, the fascets rather coarse and 

 elevated; malar space distinct, a little shorter than the width of a 

 mandible at base; face about as wide as the transverse diameter of 

 an eye; posterior orbits very narrow, rounded; ocell-ocular line 

 hardly twice the greatest diameter of an ocellus; antennae slender, 

 26-jointed, the joints of flagellum subequal or shortening very slightly 

 toward the apex and about three times as long as thick ; pedicel about 

 equal to the scape; parapsidal grooves nearly effaced, mesonotum 

 faintly rugulose, scutellum smooth ; mesopleurae smooth ; propodeum 

 smooth, with a distinct median carina and not sloping posteriorly, its 

 apex nearly on a level with its base; wings hyaline, the stigma 

 moderately broad, the radius originating before the middle of stigma: 

 first abscissa of radius nearly equal to the width of stigma, second 

 abscissa a little longer than the first transverse cubitus; recurrent 

 nervure interstitial; median crossvein a trifle beyond the basal 

 nervure; abdomen a little longer than the thorax, lanceolate, its 

 first tergite twice as wide at apex as at base, rugulose but with a 

 semicircular, slightly depressed, flattened, smooth area at apex which 

 is bounded by a faint carinate hne from one posterior lateral angle to 

 the other; following tergites faintly wrinkled; ovipositor about half as 

 long as the abdomen. Legs long and slender, the basal joint of 

 posterior tarsi as long as the four following joints together. 



This genus is apparently related to Megalomum Szeplegeti, but 

 differs in having a distinct malar space. From Curriea Ashmead it 

 differs in the less emarginate eyes, longer malar space, peculiar first 

 tergite, and the immaculate wings. 



Type of the genus. — Diachasmxi pilosipes Ashmead.^ 



Subfamily ICII]SrE!XJTITsrA.E;. 

 ICHNEUTES BICARINATUS Ashmead. 



Opius bicarinatus Ashmead, Can. Ent., vol. 23, 1891, p. 4. 

 ' Joura. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 137. 



