4i8 



9. Tegmina smooth, not granulate; veins thin and prom- 

 inent, not granulate. Face with two transverse white 

 bands 3 BcncUa gen. nov. 



9a. Tegmina granulate on the costal cell and sparsely else- 

 where, veins stout and prominent, granulate; frons not 

 banded 9- 



10. Head produced distinctly in front of t'he eyes 



8 Argcleusa gen. nov. 



loa. Head not or very slightly produced. . . .9 Cythna gen. nov. 

 Ancipo is nqt included in this table. 



A chillis Kii'by. 



Achilus Kirby, 1818, T. Linn. Soc. London. XH. 474. 

 Achilius Spinola, 1839, Ann. S. E. France, VHI, 320. 

 AchiUns Am. and Serv.. 1843, Hemipteres, 524. 



I. ftauuneiis Kirby. 



Achilus Haiuincus Kir'by, op. cit. suDra 475, PI. XXHI, f. 13. 

 Hab: "Australia" (Coll. Kirkaldy.) 



Aristyllis gen. nov. 



Vertex slightly declivous, more or less confused with the 

 frons ; t'he lateral margins fork, about their middle, (as seen 

 dorsally), the inner keels meeting at an angle on the anterior, 

 margin (as seen dorsally), carinate medianly, posterior margin 

 emarginate angulately. Frons obsolescently carinate medianly, 

 the apical 'half excavated horseshoe-shaped. Clypeus more 

 strongly carinate medianly, carinate (as also frons) laterally. A 

 white opaque band across face. Eyes large, eac'h about as wide 

 as vertex. O'celli distinct. Pronotum short, wider than head, 

 tricarinate. Scutellum itricarinate. Tegminal venation as fig- 

 ured (all the Australian genera are very similar, differing prin- 

 cipally in the relative proportions of the apical cells), not gran- 

 tilate. Legs spineless, or with one spine. Type A. aristyllis. 



This genus is apparently Plcctodercs Fowler (in part); I say 

 "in part." because Fowler's genus is obviouslv heter@p-eneous. 

 In Plcctodcres Spin., the head is stated (and figured) to"be fulh" 

 as wide as the pronotum; in all the Australian Achilina,e, the 

 'head is distinctlv, often verv muc'h, narrower. 



