158 BULLETIN 85, UNITED STATES NATIONAL MUSEUM. 



tibiae with a moderately large spur at base. Wings similar but often 

 tinged with yellow. Male anal valve and forceps longer than in 

 caudata; forceps more slender and less enlarged at apex. Female 

 genital segment less elongate, relatively thicker and not upcurved 

 at apex, less than one-third as long as rest of body, without an appar- 

 ent suture across the middle. 



Described from one female (paratype) from Orono, Maine (Patch), 

 on Alnus incana, July 26, 1905; several males and females from 

 Stamford, New York (Van Duzee), June 6, 1909; Holderness, New 

 Hampshire (Koebele), October, 1884; Ottawa, Ontario, Canada 

 (W. Metcalfe), on "Alder," August 3, 1904; Marquette, Michigan 

 (Hubbard and Schwarz), July 27; Easton, Washington (Koebele). 



PSYLLA TORRIDA, new species. 



Figs. 96, 269, 312, 474. 



Length of body (male) 1.6 mm.; (female) 2.1; length of forewing 

 2.3; width of head 0.70. General color orange to red; abdomen 

 blackish ventrad; antennae black on apical three-fourths. 



Head scarcely as broad as thorax; vertex elevated roundly (when 

 viewed from directly above it) in front on each side of median line, 

 postocellar areas strongly elevated, somewhat pubescent. Genal 

 cones about two-thirds as long as vertex, more or less separated at 

 base and quite strongly divergent, rounded to subacute at apex, with 

 a few long blackish hairs. Antennae extremely long and slender, 

 more than four times as long as width of head. 



Thorax rather strongly arched, somewhat pubescent. Hind tibiae 

 with a relatively large spur at base. Wings small, less than twice as 

 long as broad, rather squarish on apical margin, clear or slightly 

 tinged with yellow; costal margin distinctly setose; pterostigma small, 

 opaque-yeUow. 



Genitalia. — Male. — Anal valve small, rather cylindrical, not much 

 longer than forceps, somewhat flared out cup-like at apex; forceps 

 ovoid, flattened, about twice as long as broad (in lateral aspect), 

 pubescent; with a slender, crotch-shaped structure arising between 

 forceps from caudal end of genital segment, and the two slender 

 capitate arms lying close to the inner surface of forceps. Female. — 

 Genital segment nearly as long as rest of abdomen, dorsal valve longer 

 than ventral and less acute; ventral valve very acute at tip; pubes- 

 cence long and stiff. 



Described from four males and five females from Para, Brazil 

 (C. F. Baker). This and the following two species, all tropical, are 

 sharply distinguished by the extremely long antennae, and are closely 

 interrelated in many respects, and it is quite possible that they 

 should be placed in a distinct genus. 



Type in author's collection. 



