308 AMERICAN PSYCHODID^. 



nal spike; segments 1-2 covered with scales and scattered hairs; 3-16 with short 

 scales on the nodes inside the whorls of vertical hairs; whorls reaching beyond 

 base of succeeding node, thus forming a broad cup around it. Sex indistinguish- 

 able, but from the shape of the posterior abdominal segments probably a female. 



Hab. — Oak Creek Cauon, Arizona. Single specimen from the 



Kansas University collection. Collected by Prof. F. H. Snow, in 



August. 



l*ericoina longiplata n. sp. 



Body light brown, heavily clothed with grayish-brown hair; that upon the 

 thorax almost white. Antennae 17-jointed ; basal segments strong and densely 

 clothed with light scales and scattered bristling hair; length of first segment 

 greater than its breadth; second spheroidal; segments 3-15 with basal enlarge- 

 ments, well clothed with whorls of light hair; 16 spherical ; 17 closely joined to 

 16 with basal enlargement, and distal spike longer than the basal swelling; pedi- 

 cles short and strong; length of antennse .9 mm. Length of wing 2.1-2.2 mm. ; 

 breadth .75 mm. ; narrower than in preceding species, but not acutely angular at 

 tip; apex slightly nearer tip of median vein than simple branch of radial sector; 

 above, wings very densely clothed with fine dark gray hair; below, base of veins 

 with a few scattered brownish scales, followed by flat hairs of the same color, 

 which extend to the tip of the wing; radial bifurcation slightly nearer base of 

 wing than cubital, about .1 mm.; cubital furcation in the middle of the wing; 

 fringes very heavy ; posterior .5 mm. broad ; anterior denser, but less erect than 

 posterior. Legs about same color as body ; hairs and scales covering them some- 

 what lighter than on body; middle and posterior tibiae each with a row of long, 

 erect spine-like hairs on its inner and outer surfaces; those on middle portion of 

 the segments longest, and those of the outer row longer than those of the inner; 

 femurs and tibiae rather sparingly clothed with closely applied hairs and scattered 

 scales: tarsi clothed with light scales. Ovipositor well developed, yellow, reddish 

 toward the base; length .42 mm.; strong at base, but tapers quite rapidly to 

 rather an acute point; slightly curved downward. Ventral plate longer than 

 broad; broadly emarginate behind, slightly constricted in middle; base expanded 

 and truncate; same color as ovipositor; three-fifths length of ovipositor. 



Hah. — Oak Creek Canon, Arizona. Five females from the 



Kansas University collection. Collected by Prof. F. H. Snow, 



in August. 



Pericoma variegata Kincaid. 

 Pericoma variegata Kincaid, Entomological News, X, p. 33 (1899). 

 "Female. — Body black, clothed with white hair, except a small patch of black 

 hair near the base of the wing. Legs black, clothed with black and white hair. 

 Wings rather acutely rounded at the tip, more than twice as long as broad ; hair 

 upon the veins deep black, except upon a broad transverse band near the base 

 and an outwardly curved row of small patches just beyond the middle, which are 

 white; fringe, both on anterior and posterior margin, with alternate patches of 

 white and black hair; length of wing 2.8 mm. Antennae black, as long as the 

 width of the wing, 17-jointed ; joints 1-3 stout, cylindrical, densely hairy ; joints 

 4-17 small, fusiform, thinly clothed with long white hair. Ventral plate brown, 

 shallowly emarginate at apex ; ovipositor brown, rather long, almost straight." 



Hab. — Seattle, Washington, May 8th. 



