OF WASHINGTON. 241 



TABLE OF SPECIES. 



Wings rounded at tip; pterostigma long and very distinct. 



Wings hyaline, shining; vertex and thorax black or brown ; frontal 

 cones decidedly longer than wide, coniform, acute at tip, 



calt'Jorntca, n. sp. 



Wings yellowish, transparent, moderately shining; color of body 

 uniformly honey-yellow; frontal cones distinctly cone-shaped, 



longer than wide flavida, n. sp. 



Wings black, not transparent, very little shining, vertex black, thorax 

 orange-yellow; frontal processes as long as wide or broader than 



long nigripennis Riley 



Wings distinctly angulate at tip. hyaline, with a large brown patch at 

 basal half of anterior basal cell; vertex and thorax brown, frontal 

 processes transverse, very short, pterostigrr.a short and indistinct, 



triozomima, n. sp. 



The color of our species appears to be more constant than in 

 most other Psyllids, so that it can safely be relied upon for the 

 distinction of the species ; immature specimens of nigripennis 

 can readily be distinguished from Jlavida and calif ornica by the 

 form of the frontal cones. 



Calophya triozomima, n. sp. 



Average length 1.9 mm. Vertex and thorax reddish brown, frontal 

 lobes, abdomen and legs pale yellow (bright green in living specimens). 

 Vertex smooth or obsoletely alutaceous, shining, discal impressions very 

 large, transverse, frontal lobes reddish or reddish yellow, not, or barely 

 visible from above, very short, transverse, broadly rounded anteriorly; 

 antennae stout, distinctly shorter than the width of the head, distinctly 

 clavate, apparently 8-jointed, either uniformly pale yellow or slightly in- 

 fuscate at tip. Surface of thorax lighter or darker reddish brown, more 

 or less shining, smooth or obsoletely alutaceous. 



Wings about 2^ times longer than wide, widest at middle, distinctly 

 acuminate and angulate at tip, smooth, perfectly transparent and colorless 

 excepting a larger or smaller brown spot at the basal portion of anterior 

 basal cell. Veins prominent, pale yellow, base of subcosta frequently 

 blood-red; cubitus extremely short, fully 3 times shorter than discoidal 

 part of subcosta, pterostigma but little conspicuous, very narrow but 

 traceable to about the middle of radial cell, radius straight, stem of first 

 fork as long as discoidal part of subcosta, stem of second fork more than 

 three times longer than that of the first, greatly curved; first furcal as 

 long as the stem, a little curved before the terminus and ending perpen 

 dicularly on the costa; second furcal more than twice longer than the first 

 and forming a right angle therewith, at basal third straight and running 

 toward the stem of second fork, then suddenly and nearly angularly bent 

 and running straight toward the costa which it reaches under an oblique 



