1907.] Brues, North American Parasitic Hymenoptera. 
109 
mesonotum ; slightly convex, sparsely covered with black hairs, but 
without a median row. Metathorax one-half as long as the scutellum. 
The thorax is entirely rufo-ferruginous except for greenish reflections 
on the mesonotum behind. Abdomen almost as long as the head and 
thorax, shining basally and finely but closely punctate apically ; first 
three segments pale brown, with greenish reflections, apical segments 
greenish black. Ovi^jositor pale, one-half as long as the abdomen. 
Legs pale rufous, the middle tarsi brown, and the entire hind legs 
piceous brown with greenish reflections. Hind tibiae not at all com- 
pressed. Wings hyaline, with a broad brown cross-band which includes 
the marginal and stigmal veins. Marginal vein as long as the 
submarginal and five times as long as the stigmal, which is indistinctly 
knobbed. 
One female from Brownsville, Texas. April, 
This species is superficially extremely similar to the preced- 
ing, both in color and wing pattern. It is readily distinguished, 
however, by the shorter, more widely separated eyes, flat scu- 
tellum and non-compressed hind tibise. 
FAMILY MYMARID^. 
Gonatocerus americanus sp. nov. 
Female. Length .75 mm. Shining black, the anterior knees and 
all tarsi light yellowish ; scape and pedicel of antennae more or less 
pale. Head large and flattened, very wide, nearly one-half wider than 
the thorax. Antennae 11-jointed, slender, especially toward the base 
of the flagellum. Scape extending to the vertex, about five times as 
long as thick ; pedicel oval, as stout as the scape. First three flagellar 
joints very small, together only a little longer than the pedicel ; fourth 
longer but slender ; fifth and sixth stouter, about equal ; seventh and 
eighth longer ; last joint nearly as long as the four preceding taken 
together, but no thicker. ]Mouthparts piceous brown. Thorax smooth 
and shining, the scutellum distinctly longer but considerably narrower 
than the mesonotum. Metathorax very short, depressed. Abdomen 
small, as long as the thorax, but only about one-half as wide as long; 
somewhat concave and compressed above. Legs slender, the tarsi 
five-jointed. Wings hyaline, broad, being only three times as long as 
