THE JUMPING PLANT-LICE OR PSYLLID^ OF THE NEW WORLD. 103 



haK at right angles to axis of valve. Female. — Genital segment short, 

 not much longer than preceding segment, dorsal valve a Uttle longer 

 than ventral, subacute. 



Described from eight males and females from: Claremont, Cali- 

 fornia (C. F. Baker), Laguna Beach, California (Baker) ; Los Angeles, 

 California (Coquillett) ; Argus Mountains, California (Koebele), 

 April; Boulder, Colorado (S. A. Rohwer), on Salix rostrata (behhiana), 

 May 2, 1908. 



Type in author's collection. The three specimens in the collection 

 of the U. S. National Museum bear the label Trioza ichneumonia 

 Riley, a manuscript name. 



CEROPSYLLA JOHNSONII Crawford. 



Figs. 156, 158, 498. 



Triozoida johnsonii Crawford ' 1 lb: 492. 



Length of body 2.2 mm; length of forewing 3; width of head 0.78, 

 General color light brown; vertex shining black; prsescutum brown; 

 hind legs light brown, others dark or black. 



Head moderately broad, not quite as broad as thorax, scarcely 

 punctate; postocellar regions unusually elevated; vertex smooth 

 between posterior ocelU, roundly bulging in front and less emarginate 

 at median line than in califomica; anterior bulging less acute than in 

 sideroxyli and more so than in califomica; genal cones nearly as long 

 as vertex, conspicuously separated from base to apex, vertical, 

 blunt at tip, sparsely pubescent; with the elongated clypeus extend- 

 ing downward and visible behind and between cones, as long as latter 

 and appearing as a third cone. Eyes large. Antennae about twice 

 as long as width of head, inserted almost directly in front of genal 

 cones instead of at the side as in most other species of the family. 



Thorax strongly arched; pronotum and prsescutum rather stout. 

 Wings transparent, almost three times as long as broad, slender, 

 acute at apex; basal vein not as heavy as in califomica; M and Cu 

 distinctly petiolate; Rs short; second marginal cell much larger 

 than first. 



Genitalia. — Male. — Forceps almost as long as anal valve, simple, 

 converging uniformly from base to tip, arcuate, toothed at apex, 

 rather densely pubescent; anal valve with a short, subacute lobate 

 process caudad from subapical portion of axis, pubescent. 



Described from one male collected at Belize, British Honduras, 

 by J. D. Johnson. No other data are given. 



Type in author's collection. 



This species, in general, is more closely related to sideroxyli than 

 to califomica, but in wing characters it is more closely related to 

 the latter. 



6060°— Bull. 85—14 S 



