HEMIPTERA— CICADELLIDAB (JASSIDAE) 



181 



rounded behind ; plates broad at base, constricted to acute tips, margins ciliate, 

 slightly exceeded by the pygofer which is quite distinctly ciliate. Pale straw 

 colour, markings of vertex and pronotum obscure ; elytra hyaline with traces 

 of fuscous margins in the cells and a distinct fuscous spot at base of middle 

 anteapical cell. Beneath pale, abdominal segments somewhat suffused, especially 

 at the sides, with fuscous. 

 Length, 2-5 mm. 



Described from one male (holotype) Tau, Manua, 9-27-1923, Swezey. 

 Collected from grass. 



This species comes very close to Stirellus (Phrynomorphis) hospes Kirk., 

 but difiers distinctly in the picture of the vertex and the distinct frontal arcs : 

 it agrees with it in the fuscous spot at base of middle anteapical cell and differs 

 but slightly in the male genitalia. 



I have compared it with one of Ivirkaldy's specimens, probably a co-type, 

 and I am satisfied that it cannot be considered identical with that species. 



21. Stirellus tauensis, n. sp. 



Head wider than pronotum ; vertex subangulate, wider at base than 

 length at middle ; length at middle one-third longer than at eye, rather 

 distinctly rounded to front ; front distinctly convex, narrowing rather sharply 

 to the base of clypeus ; clypeus broad, narrowing slightly toward the apex ; 

 cheek margin sinuate ; pronotum as long as vertex, sHghtly concave behind ; 

 elytra! veins rather weak with one cross-vein on disc. 



Female, last ventral segment longer than preceding ; hind border truncate, 

 the lateral angles slightly produced ; pygofer broad, scarcely exceeded by the 

 ovipositor. 



Straw-coloured ; vertex with a pair of oblique dashes at the apex, a faint 

 dot near the base ; pronotum with impressed fuscous markings anteriorly ; 

 el3rtra with whitish veins, the areoles in part faintly margined with fuscous ; 

 front with faint lateral arcs ; pygofer at base somewhat suffused with fuscous. 



Length, 3 mm. 



Described from one female (holotype) " Tau, Manua, 9-27-1923, 0. H. 

 Swezey collector, grass." 



This specimen was mounted with the one described as affinis, evidently 

 collected at the same time but certainly a different species. It has the vertex 



