306 AMERICAN PSYCHODIDiE. 



thetibias; tarsi with gray scales. Wings lanceolate, acutely pointed ; length 3.5 

 mm. ; fringe on anterior margin black, as long as the width of a cell, with a 

 long tuft near base; on posterior margin gray, sometimes with a few black hairs, 

 as long as the width of three cells ; small patch of black hair at tip of each vein, 

 an irregular band of black hair across wing, toward apex; immediately internal 

 to this two patches of white hair which occasionally run together into a band ; 

 small patch of white hair at base of wing; region near base with mixed black 

 and white hair; antennae 16-jointed, dark, clothed with verticillate gray hairs 

 upon the nodes, excejft first and second joints, which are covered with scales; 

 first joint cylindrical; second joint round; joints 3-14 fusiform, produced into 

 tapering pedicles; joints 15-16 small, without pedicles; length in female as long 

 as width of wing with fringe; in male twice the breadth of wing; male geni- 

 talia not conspicuous; brown, with scattering gray hairs. Inferior appendages 

 2-jointed ; first joint oblong, stout, united into a broad plate ventrally, which is 

 produced posteriorly into a small, median, conical i)rocess; second joint slightly 

 longer than first, obclavate, slightly curved, apex truncated and bearing a group 

 of long stiff bristles. Superior appendages as long as inferior, 2-jointed ; first 

 joint oblong; second joint a little longer than first, slender, tapering to an acute 

 point. Ventral plate of female as broad as long, terminating posteriorly in two 

 finely pubescent lobes with a slight emargination between ; anteriorly it is 

 densely clothed with gray hair; ovipositor yellowish, inconspicuous, as long as 

 ventral plate, almost straight." 



Hah. — Olympica and Seattle, Washington, April and July. 



Pericoma f'lircata Kincaid. 

 Pericoma furcata Kincaid, Entomological News, X, p. 34 (1899). 

 "Female. — Body brown, clothed with white hair, among which a few black 

 hairs are scattered. Wing twice as long as broad, narrowly rounded at the apex, 

 which is pointed between the simple veins; wings clothed with white and black 

 hairs as follows: Two curved rows of prominent black tufts across the middle of 

 the wing, between which the hair is principally wliite ; the area between the 

 outer row of black tufts and the apex of the wing principally with black hair; 

 area between the inner row of black tufts and the base of wing with mixed 

 black and white hair; fringe black, with white tufts at apices of all the veins; 

 bifurcations equidistant fiom the base of the wing; length of wing 2.8 mm. 

 Antenute as long as the width of the wing, 16-jointed ; joints 1-2 slightly larger 

 than the succeeding ones; joints 3-16 swollen at base and bearing loose tufts of 

 black hair. Legs with alternate annulations of black and white hair. Ventral 

 plate dilated basallyand strongly produced in the middle, the production bilobed 

 and angularly emarginate at apex; ovipositor moderately long, almost straight." 



Hab. — Pullman, Washington. 



Pericoma trialbawliorla n. sp. 



Body dark brown to black, quite densely clothed with light gray and black 

 hair; white predominating on the anterior part of the thorax and at tip of 

 abdomen ; band of erect hairs above eyes, white; hair on lower surface of body 

 darker. Legs dark brown, clothed with dark haiis and scales and banded with 

 white at joints; base of tarsi white; tibiae with median and terminal bands of 

 white; hind tarsi almost entirely white. Length of antenna; 1.25 mm.; 17- 



