112 
1881. Nematua erichsonii Ilagen. Can. Eut., xiii, p. 37. 
1883. Nematua erichsonii Packard. Kept. U. S. Ent., pp. 138-146. 
1883. Nematua erichsonii Packard. Bull. 3, Div. Put.. P. S. Dept. Agr., \)\). 2!), 30. 
1883. Nematua eriehaonii Fyles. Can. Eut., XV, p. 205. 
1881. Nematua eriehaonii Fletcher. Can. Ent., xvi, pp. 21,"). 216. 
1884. Nematua erichsonii Packard. Am. Nat., xvill, pp. 293-296. 
1884. Nematua eriehaonii Packard. Kept. U. S. Dept. Agrio., p. 377. 
1885. Nematua erichsonii Provaucher. Add. Faun. Can. Hym., p. 5. 
1885. Nematua eriehaonii Provancher. Nat. Can., xv, pp.38, 45-50. 
1885. Nematua eriehaonii Fletcher. Rept. Dept. Agric, Ottawa, (an., ]». 28. 
1880. Nematua eriehaonii Harrington. Can. Ent., xvill, p. :'•!'. 
L886. Nematua eriehaonii Provancher. Nat. Can., xvi, p. 32. 
1887. Nematua eriehaonii Fletcher. Sept. Dept. Agrio., Ottawa, Can., p. 55. 
B88. Nematua eriehaonii Lintner. Fifth Rept. Ins. N. Y., pp. 1(51-173. 
1889. Nematua eriehaonii Fletcher. Can. Ent., x\i, p. 152. 
1890. Nematua erichsonii Packard. Fifth Kept. IT. 8. Ent. Comm., p. s7l>. 
1890. Lygiojonematua erichsonii Konow. Deutsch. Pntoni. Zeit., xxxiv, p. 247. 
Female. — Length 11 nun.: exp. al. 22 mm. j large, moderately robust; 
head and thorax finely punctured, entire body shining; clypens 
scarcely emarginate, almost truncate; frontal and lateral ridges of 
ocellar basin rounded, indistinct; vertex nearly smooth; antenna] fovea 
long, shallow, deepest at apex; antenna' about as long as head and 
thorax, rather robust, tapering, joints 3 and 1 subequal; sheath broad, 
rounded, truncate at tip: cerci flattened, somewhat tapering; inter- 
costal cross vein hyaline, indistinct, but anterior to basal and nearly at 
right angles to cost a; first transverse cubital indistinct or wanting; 
stigma moderately broad, not acuminate; claw with minute inner tooth 
near apex. Color black: tip of clypens, palpi, basal two-thirds of 
tibiae, apices of trochanters, and extreme angles of pronotum whitish; 
femora, tips of anterior tibi;e and their tarsi, first four segments of 
abdomen above and beneath except base of lirst segment, orange 
rufous; extreme tips of middle femora above and hind femora a little 
more broadly, tips of hind tibiae and their tarsi, black; lower surface 
of antenme rufous; veins black, except costa, which is fulvous, and 
anal vein, which is whitish; wings somewhat infnscated; dusky spot in 
second cubital cell large, prominent. 
Male. — Length 8.5 to 9 nun.; slender, elongate, abdomen not wider 
than thorax; in general, structurally as in female; procidentia strongly 
keeled, somewhat constricted basally, short, not projecting beyond the 
seventh dorsal segment; last ventral segment slightly emarginate at 
apex. Color black ; antenme, three basal segments of the abdomen dor- 
sally except more or less of base of first segment, base of the fourth 
segment, all of venter of abdomen, and the legs except bases of coxae 
reddish yellow ; tips of the hind tibia 1 and the hind tarsi brownish; 
face below antenme, more or less of lower orbits, pronotum, and tegulae 
whitish; wings as in female. 
Male described from one and female from many reared specimens 
from Canada. (Coll. IT. S. Nat, Mus.) Other females examined repre- 
