On the Hymenoptera of the Georgetown Musewm. 179 
with sloping sides, along the mesopleure above the middle. There is a curved 
keel, narrowed at the base, diverging in front, at the base of the metanotum ; 
there are three aree on its apex ; the central large, roundly dilated at the base, 
the sides above obliquely narrowed, the lateral areze widened above. 
OPHIONINA, 
Ophion latilineatus, sp.n. 
Ferruginous, the head bright yellow, the thorax of a paler yellow, with three 
broad fuscous lines on the mesonotum, the antenne blackish, reddish brown at 
the base below and towards the apex above ; wings hyaline, the stigma and 
costa ferruginous, the nervures black, the base of radius thickened ; the recur- 
rent nervure one-quarter longer than the transverse cubital, which is roundly 
curved ; the basal transverse keel on the metanotum roundly curved in the 
middle ; the basal three or four transverse strie straight, the others thicker and 
broadly roundly curved ; the upper basal half of the metapleure irregularly 
obliquely striated. Apical slope of scutellum rather strongly, but not closely 
striated. Male. 
Length 32 m.m. 
Post-petiole distinctly separated ; thickened ; the fourth and following abdomi- 
nal segments thicker than the others. The apical part of the disco-cubital 
nervure is broadly roundly curved ; widely bullated at the base, as is also the 
recurrent nervure near the top. 
Emcospilus flavus, Be. 
Ophion flavus, Bouché, Hymén, iv, 139. 
There are two horny points in the wings, a large semi-circular one, rounded at 
the top, transverse behind, and gradually narrowed to a point below; and a 
minute one, widely separated from it ; the large one has no continuation ; the 
recurrent nervure is separated from the transverse cubital by three times the 
length of the latter ; the nervures are black ; the basal abscissa of the radius 
thickened ani slightly, broadly curved. The striz on the top of the metanotum 
are almost longitudinal and irregular ; on the rest of it stronger and oblique. 
Bracospilus quyanensis, sp.n. 
_Luteous, the head pallid yellow, the antenne of a deeper, more rufous colour 
Wings hyaline, the stigma and nervures ferruginous, the apical nervures darker 
In tint, the basal horny point large, transverse below, the top basal half roundly 
widened from the base upwards, the smaller, apical half oblique on the upper 
two-thirds, the lower projecting into a point, which becomes gradually narrowed 
towards the apex, the second point is small, its apex broad, rounded, the lower edge 
rounded, the upper rounded inwardly ; the apical abscissa of the disco-cubital 
nervure fully one-third longer than the transverse cubital, which is rounded. 
Basal half of the scutellum with a shallow furrow down the middle ; the apical 
slope with two long and two short stout striz. Metanotum with irregular longi- 
tudinal striz in the middle of the base, the sides more strongly obliquely striated, 
the apex with rounded strix. The middle of mesopleurae broadly, finely obliquely 
