140 PROCEEDINGS OF THE NATIONAL MUSEUM. 



allol; |)t(M-<)thorax more or less rusty brown in color. Wings present, 

 quite long and slender, about one-seventeenth as broad in middle as 

 long, tapering graduall.v from base to tip; two longitudinal veins in 

 fore wing, the second branching from the first at about one-fourth its 

 lenoth; both veins and costa bear a few short, rather stout, dark ])rown 

 spines: costa al)out twenty, fore vein about twelve, of which only two 

 stand l)eyond the middle of the wing; hind vein about nine spines; 

 fore wings dark, smoky gray; hind wings very slightly gra^^; costal 

 fringes long. Legs rather short, but not thickened; femora and middle 

 and hind til)iie dark brown; all tarsi, fore tibia? and extremities of 

 middle and hind tibia^ yellow; fore tibia^ shaded with brown above; 

 hind tibia' alone bearing stout spines. 



Abdomen about two-thirds the length of the body and only about 

 one-fourth as wide as long, almost C3dindrical in form; segments not 

 overlai)ping. width of segments increasing very graduall}^ up to the 

 sixth, then diminishing rapidly; last three segments conoid, prolonged 

 at tip of tenth. Spines on sides of abdomen weak and inconspicuous 

 before the seventh segment; eight bears three or four short, very 

 stout, slightl}" curved, dark brown spines on each side; nine bears a 

 circlet of long, slender spines; tenth segment split open above, sharply 

 pointed at tip, and on each side above is a short, very stout, straight, 

 dark ])rown spine reaching but slightl}^ beyond the tip; color of 

 abdomen gray-brown, shading to almost black at tip; connective tissue 

 pale yellow; surface of segments finel}^ reticulated. 



Described from eight long-winged females. 



Cotijpc.—C^t. No. 6326, U.S.N.M. 



Male. — Length 1.05 mm. (1.02 to l.OS mm.); width of mesothorax 

 0.22 mm. (0.20 to 0.22 mm.). 



Head as broad as long. Ocelli generally wanting, though some- 

 times vestiges are present. Antennte only one and one-third times as 

 long as the head; relative lengths of segments: 



Color paler than in female, with more of a yellowish tinge, becoming 

 yellowish brown at tip. Pterothorax without traces of wing pads; 

 the dorsal plates very broad, being as wide as first alxlominal segment. 

 Head and thorax yellowish brown; legs yellow; femora and tibia? con-» 

 siderably shaded with brownish. fl 



Abdomen but little more than twice as long as wide, though seg- 

 ments overlap considerably, giving it a yellowish brown and dark- 

 brown cross-banded appearance; bluntly rounded at tip; segment nine 

 very large and l)luntly conoid; segment ten small, cylindrical, and 

 plainly visible retracted within the ninth; copulatory apparatus pro- 

 jecting a litt le from ten. Close together in middle of nine above stand 

 two extremely short blunt spines i)orne upon l)roader black, chitinous 



