THE JUMPING PLANT-LICE OR PSYLLIDiE OP THE NEW WOELD. 123 



species. There is no reason why tlie genus name should be spelled 

 Arytaena instead of Arytaina, as Forster first used the name. 



SYNOPSIS OF SPECIES. 



a}. Vertex and notum not or scarcely pubescent. 



fc*. Forewings conspicuously spotted, maculated, or entirely dark, 

 c*. Wings with numerous brown spots isolated or fused to form two irregular 

 maculae, one apical and the other subbasal; male genitalia simple; body 



surface and wings often pulverulent robusta, new species. 



(p. Wings not as above; body surface and wings not pulverulent. 

 (T^. Wings entirely brown to black, thickened, not at all transparent; forceps 

 of male bi-lobate, large; genal cones rather large . fuscipennis, new species. 

 d'. Wings with one or two dark maculae; forceps of male simple. 

 e * . Genal cones large ; head often broader than thorax ; male anal valve simple ; 

 notum often striped. 

 / ^ Wings with a longitudinal brown macula between Rg and M ; forceps 



large, broad, thick genistx Latreille. 



/*. Wings clear except a conspicuous black spot at tip of clavus and some- 

 times a faint brown streak across base; forceps smaller, more slender; 

 thoracic dorsum usually conspicuously striped and mottled. 



rihesix Crawford. 



e*. Genal cones small; head not broader than thorax; wings with a brown 



band extending along posterior margin, thence toward primary furca- 



cation of basal vein; anal valve of male very large, with a large, angular 



posterior lobe about half as long as valve; forceps slender. 



assimilis, new species. 



6^. Forewings not conspicuously maculated; hyaline or sometimes slightly fumate 



or browjied apically. 



c^ Wings more or less fumate, at least apically; body small. 



(P. Female genital segment as long as rest of abdomen or longer; anal valve 



of male very broad at base, triangular in shape; forceps simple; vertex 



not emarginate at median line minuta, new species. 



(P. Female genital segment very short; anal valve of male not triangular; 

 forceps deeply bifurcate at apex, processes slender, acute, parallel; vertex 



emarginate at median line in front chelifera, new species. 



c^. Wings entirely clear or nearly so; body small; genal cones very small, short; 

 antennae short. 

 d^. Female genital segment converging uniformly to apex, not styliform. 

 e^. Forceps of male stout, with a long, large, anterior lobate process at or 



near apex; wings entirely clear amorphx Mally. 



e^. Forceps of male slender, elongate, acute at apex, cultrate; wings some- 

 times indistinctly fumate at apex ceanothx, new species. 



cP. Female genital segment subglobose at base, with apical portion slender 

 and styliform, very acute; genal cones as in two preceding species. 



aculeata, new species. 



a-. Head and notum conspicuously pubescent; forceps of male short and stout, with 



a long, slender, hook-like process at apex; wings brown at apex; vertex bulging 



on each side of median line m front pubescens, new species. 



ARYTAINA ROBUSTA, new species. 

 Figs. 1, 50, 50a, 56, 236, 283, 285, 444, 445. 



Length of body 1.8 mm. ; length of forewing 2.3 ; width of head 0.95. 

 General color very variable from greenish white to dark brown; 



