BY F. W. GODING AND W. W. FROGGATT. 563 



HOMOPTERA. 



Wings of the same thickness throughout, and usually sloping 

 at sides of body; rostrum arising from posterior part of head 

 below; destitute of a neck, the first pair of coxae articulating 

 with cheeks. 



Table of the Families. 



1 (S). Rostrum apparently arising from the sternum, or 



absent; tarsi one- or two -jointed; antennae usually 

 prominent and filiform, sometimes absent. 



2 (3). Tarsi one- jointed; adult male destitute of a rostrum; 



with two wings; female wingless, body scale-like or 

 gall-like in form, or grub-like, and clothed with wax. 

 The waxy covering may be in the form of powder, of 

 large tufts or plates, of a continuous layer, or of a 

 thin scale beneath which the insect lives ^ Coccid.e. 



3 (2). Tarsi usually two-jointed; wings, when present, four 



in number. 



4 (5). Wings opaque, whitish; wings and body covered with a 



whitish powder Aleyeodidje. 



5 (4). Wings transparent. 



6 (7). Legs long, slender; antennae three- to seven-jointed.... Aphidid.'e. 



7 (6). Hind legs fitted for leaping; antennae nine- or ten- 



jointed PSYLLID/E. 



8 (1). Rostrum evidently arising from the mentum; tarsi 



three-jointed; antennae minute, setiform. 



9 (10). Three ocelli; males with musical organs Cicadid.i;. 



10 (9). Two ocelli, or absent; males destitute of musical organs. 



11 (12). Antennae inserted on sides of cheeks beneath eyes Fulgorid.e. 



12 (11). Antennae inserted in front of and between eyes. 



13 (14).Pronotum prolonged in a horn above abdomen Membracid.i:. 



14 (13).Pronotum not prolonged above abdomen. 



15 (16). Hind tibiae armed with one or two stout teeth, and tip 



crowned with short, stout spines Cercopid^. 



16 (15).Hind tibite with a double row of spines below Jassid^. 



-Family CICADID^. 



Head with three ocelli, placed on the disc of the vertex. Disc 

 of the pronotum \ery large, with a circumscript impression, and 

 two oblique longitudinal impressions on each side, sometimes 

 occupying a large portion of the thorax. The scutellumis broad, 



