THE JUMPING PLANT-LICE OR PSYLLIDiE OF THE NEW WORLD. 41 



than two and a half times as long as broad, very slightly transparent 

 on white portions, granulate; marginal cells subequal; pterostigma 

 long. 



Genitalia. — Male. — Genitalia similar to type-species; relatively 

 small; forceps narrower than in spinifera; anal valve not much longer 

 than forceps. Female. — Genitalia simdar to type species. 



Described from 10 males and females collected at Tucson, Arizona, 

 by H. G. Hubbard, in January, on Prosopis julijior, and 15 on 

 "Larrea," on December 13, 1896, at the same place. These speci- 

 mens were labeled Rliinocola prosopis (manuscript). 



Type.— Cat. No. 18071, U. S. Nat. Mus. 



APHALAROIDA INERMIS, new species. 

 Fig. 398. 



Length of body 1.7 mm.; length of forewing 1.8. General color 

 light chocolate brown over most of body surface, including legs; 

 vertex often lighter; thoracic markings as m spinifera; wings light 

 brown, with small, irregular white spots, which are sometimes 

 rather large. Body small to medium in size, without conspicuous 

 glandular hairs except in front of vertex and in front of wing bases, 

 very small. 



Head almost as broad as thorax, relatively large; vertex rather 

 long, more or less rectangular. Antennae a little longer than width 

 of head. Thorax as in related species. Forewings nearly two and 

 a half times as long as broad, rather thick, coriaceous, somewhat 

 rhomboidal; pterostigmal vein (R) incomplete; marginal cells sub- 

 equal. Genitalia of both sexes similar to pi^osopis. 



Described from many males and females from Tucson and Fort 

 Yuma, Arizona (Hubbard), December and January, on Prosopis 

 julijior; Palm Springs, California (Hubbard), February; one female 

 from San Antonio, Texas (E. A. Schwarz), on Mimosa horealis, in 

 May. 



Type.— C&t. No. 18072, U. S. Nat. Mus. 



APHALAROIDA ACACIAE. new species. 



Fig. 397. 



Length of body 1.7 mm.; length of forewing 1.7. General color 

 brown; vertex light brown; thoracic dorsmn marked as in spinifera 

 but much more indistinctly so; forewings (smnmer form) largely 

 wliitish with a brown to dark brown macula as in illustration; 

 (winter form) : Darker on body; \vings darker, with macula black. 

 Body and wings without glandular hairs, or with extremely short 

 ones; usually almost glabrous. Body small to medium in size. 



Head narrower than thorax; relatively smaller than in inermis; 

 antennae about as long as width of head, light colored. Thorax of 

 typical form. Wings sHghtly rhomboidal, thickened, granulate, less 



