THE JUMPING PLANT-LICE OR PSYLLID^ OF THE NEW WORLD. 127 



Somewhat similar to genistx in general size and appearance, but 

 differing sharply in several respects. Head often broader than 

 thorax; genal cones variable from very broad and not longer than 

 basal width to narrower and one-third longer than basal width, only 

 a little divergent, rounded at apex, sometimes rather narrowly 

 rounded. Antennae usually about twice as long as mdth of head. 



Thorax often more strongly arched, large; hind tibisB with basal 

 spur smaller, or wanting. Wings large, hyaline, or sometimes with 

 a slight brownish tinge, with a black spot at tip of clavus and some- 

 times a more or less distinct brown area across wing base, about 

 two and a half times as long as broad, somewhat narrowed toward 

 apex; venation similar to preceding species in general; pterostigma 

 small. 



Genitalia. — Male. — -Anal valve much longer than forceps, somewhat 

 narrowed toward apex; forceps rather short, slender, converging 

 toward tip, latter subacute. Female. — Genital segment thick at base, 

 usually about half as long as rest of abdomen, dorsal valve shghtly 

 longer than ventral, both acute or subacute. 



Described from numerous specimens of both sexes from: Boulder, 

 Colorado (E. Bethel), on Rihes longiflorum.; Fort Collins, Colorado 

 (C. P. Gillette), on Rhus trilohata, September 27, 1894; Poudr River, 

 Colorado, "sweeping on low bushes," June 28, 1883; Colorado (no 

 data); Williams, Arizona (Barber and Schwarz), July 27; Ogden, 

 Utah (Koebele), "on currant" (Rihes sp.), June, 1885; Los Angeles, 

 California (Coquillett), on Riles aureum, March 28; same locality, on 

 Ceanoihus divaricatus, June 8, 1887; Placer County, California 

 (Koebele), on Ceanothus cordulatus ? 



Tj'pe in author's collection. 



This species has been known more or less commonly by Riley's 

 manuscript name of PsyUa rihis, but tliis is not the same as Miss 

 Patch's species of that name. 



ARYTAINA ASSIMttlS, new species. 



Figs. 57, 237, 448. 



Length of body 1.9 mm; length of fore wing 2.2; width of head 

 0.80. General color reddish brown, lighter on dorsum and head. 

 Body rather small, long. 



Head relatively rather small, deflexed quite strongly, about as 

 broad as thorax, punctate; vertex arcuate on posterior margin, w^th 

 a deep fovea on each side of median line near center, slightly bulging 

 in front on each side of median line, not strongly elevated on post- 

 ocellar regions; genal cones rather short, contiguous at base, rounded 

 broadly at apex, slightly pubescent. Antennae a little more than 

 twice as long as width of head, slender. 



Thorax arched strongly, robust, punctate. Pronotum rather long, 

 flat on dorsal surface ; propleurites short. Wings small, sub-hyaline, 



