JAN. 1907. NORTH AMERICAN PARASITIC HYMENOPTERA. 
59 
type are broken. The complete appendages are 50- jointed and 
(jne and one-half times as long as the body. 
Dinotrema soror sp. nov. 
Female. Length 1.75 rami. Black; legs, first abdominal segment 
and basal three joints of antennae reddish yellow. Head twice as wide 
as thick, polished above, below^ the antennse convex and punctured. 
Mandibles honey-yellow, with black tips; palpi whitish. Cheeks 
smooth and polished. Antennse 19-jointed, tirst flagellar joint nar- 
rower, but considerably longer than the second which is twice as ^ong 
as wide; following joints sub-equal, those near the apex a little shorter 
and slightly moniliform in shape. ISIesonotum polished, without any 
traces of parapsidal furrows. The scutellum at base with a large 
transverse fovea divided by a delicate median carina. Metanotum 
rugose-reticulate, without carinse. Spiracles round, very distinct. Ab- 
domen sub-petiolate, three times as long as wide at tip, its surface 
roughened. Eest of, abdomen polished; ovipositor projecting beyond 
the tip of the abdomen by somewhat less than the length of the first 
abdominal segment. Legs reddish-j^ellow. Wings hyaline, stigma 
linear, imperceptibly thickened basally and extending to the tip of the 
radius. First discoidal c^ll sessile; first and second abscissae of the 
radius meeting at a distinct angle, the first abscissa and; the second 
transverse cubitus about equal. First cubital cell almost quadrate, 
the second receiving the recurrent nervure and therefore five-sided. 
Subdiscoidal nervure originating well below the middle of the discoidal 
nervure. 
Described from a female sent me a number of years ago by 
Mr. H. G. Klages, collected at Pittsburg, Pa. 
The genus Dinotrema has never had any species referred to 
it so far as I know, and Forster designated no type. The present 
species runs mto this genus in both the classification adopted by 
Ashmead and by Szepligeti, so I have followed the custom usually 
adopted with Forster's atypical genera and referred it here as 
Dinotrema. 
Orthostigma americana sp. nov. 
Female. Length 3 mm. Black; under side of scape and pedicel, 
mandibles, palpi, tegulae, and legs, luteous; the hind tibiae and tarsi 
blackish. Head shining, two and one-half times as wide as thick, the 
temples full and the occiput concave. Face microscopically punctured, 
protuberant, sparsely whitish hairy. Mandibles tridentate, with a 
