NO. 1310. XOR TH A MERICAX TH 1 'SA XOPTERA—IIIXDS. 131 



just before the tip and unite with the ring vein; fore longitudinal vein 

 united to front part of ring vein by two cross veins at about the first 

 and second thirds of its length and to the hind vein by one cross vein 

 just before the middle of the wing; hind vein united to hind part of 

 ring vein by one cross vein at about three-fifths the length of the 

 wing. Fore part of ring vein and both longitudinal veins set with 

 numerous short, dark spines; ])oth pairs of wings thickly covered with 

 microscopic spines; no fringe upon front edge of fore Avings, but a 

 very light one upon hind wings; posterior fringe on fore wings double, 

 on hind wings single; hind wings veinless. Wings clear white; fore 

 pair conspicuously marked with two broad, brown bands so that there 

 are narrow white bands across the base, middle, and tip of the wing; 

 hind wings almost clear white. Legs concolorous with body, very 

 long and slender; fore femora slightly thickened, but less than half as 

 wide as long; second segment of fore tarsus fitted with a peculiar 

 hook-like structure recurved toward base of segment and at tip 

 opposed to a stout tooth. All legs quite thickl}^ set with small spines; 

 hind legs much the longest, nearly as long as wdugs; each tibia armed 

 at apex with two or more stout spines. 



Abdomen small at base, enlarging gradually to its sixth segment, 

 where it is about one-fifth as wide as the body is long; eight, nine, and 

 ten tapering uniformly and quite abruptly; no marked difierence in 

 length of segments. Posterior part of segment one and segments two 

 and three white or yellowish in color; remainder of abdomen ^^ellowish 

 brown to dark brown. No spines apparent upon the abdomen, except 

 on last three segments; nine bears a circlet of eight long slender 

 l)ristles near its posterior edge; ten bears six similar bristles. Ovipos- 

 itor very powerful, up-curved, and extending a little beyond the tip of 

 abdomen. 



Described from nine females. 



G>/y/>tf.— Cat. No. 6323, U.S.N.M. 



Male. — Length but little more than 1 mm.; width of mesotho- 

 rax slightly less than one-fourth liody length. General color tawny 

 yellowish with brown extremities to appendages, not nearly as dark 

 as female. 



Head subequal in length and breadth and slightly smaller than 

 prothorax; spines in front of transverse thickening at base of mouth 

 cone not conspicuously long. Antennae three and one-half times as 

 long as head, almost equal to length of abdomen; relative lengths of 

 sepiiients as follows: 



Outer two-thirds of antenna dark brown; first three segments light 

 gray-brown, two and basal half of three being lightest; antennte very 



