The Hymenoptera of the Georgetown Museum. 135 



stout keel, roundly curved laterally ; it forms on the sides with the keel at the 

 the post-scutellum a longish triangular area, the narrowed end on the inner-side 

 The lower part of the mesopleurae is bordered by a stout keel .vhieh commences 

 at the base higher up and is there roundly curved ; there is a row of irregular 

 foveae down the apex. 



Hadronotus leviventris, sp. n. 



Black, the antennal scape, basal two joints of flagellum and the legs, 

 except the coxae, rufo-testaceous ; wings hyaline, closely ciliated, the nervures 

 pallid testaceous. Female. Length, 1.5 mm. 



Bred from eggs of plant bug." 



The apical five joints of the antennae form a stout club, clearly separated 

 from the basal joints, its foui basal joints are wider than long, the last thinner, 

 longer than wide, conical. Head clearly wider than the thorax ; aciculated 

 opaque, with scattered punctures. Eyes large, projecting, slightly converoin" 

 above. Temples very little developed. Occiput broadly, roundly incised. 

 Ocelli in a wide curve, the hinder close to the eyes, the central in the middle. 

 Frontai depression deep, of equal width, closely somewhat strongly striated. 

 Malar space longer than the eyes, roundly narrowed below. Mesonotum on 

 basal two-thirds closely reticulated-punctured, the centre of the apical 

 third bordered by furrows, irregularly, weakly striated and somewhat 

 reticulated. Scutellum coarsely reticulated. There is a wide crenulated 

 border on the base of the metanotum, the rest of which is irregularlv reticulated . 

 Base of propleurae depressed, striated. There is a curved striated border 

 on the base of the mesopleurse, bordered by keels. Metapleurae irregularly 

 reticulated, more closely at the apex than at the base. Base of abdomen 

 closely crenulated margined at the apex by a keel ; this is followed by a 

 crenulated depression. The abdomen is shorter than the thorax, it is flat, 



longish oval ; the 2nd segment is larger than the others, wider than loin', 



and longer than all the following united ; the sides and apex are fringed with 

 long, white hairs. Mesonotum densely covered with short white hair. 



DIAPRIIN.E. 



Spilomicrini. 



Hoplopria, Ashm. 



I refer two species in the collection to this genus. They aie very 

 different in structure, but the male fits in with Ashmead's descriptive 

 of the male the only sex he describes, The Guiana female has 

 13-jointed antennae, which have a 5-jointed club ; the base of the 

 thorax is roundly narrowed, not transverse ana forming a clearly separ- 

 ated collar as in the male ; the parapsidal furrows are wide ; there are 2 

 longish oval foveae at the base of the scutellum, the abdominal petiole 

 is about 3 times longer than wide and is strongly keeled above and laterally 

 below. The collar, metathorax and abdominal petiole are th'ckly covered 



