MANUAL OF NATURAL HISTORY. 247 



I. SUB-ORDER. — Trimerous-Homoptera (Trimera). 



Tarsi 3-joiiited ; antenna minute, setigerous ; wings 

 areolate. 



1. Family. — M usical Harvest-Flies (Cicadidae). An- 



tennae 7-jointed, inserted between the eyes ; 

 head short, broad, transverse ; eyes large, 

 prominent ; ocelli three, on back of head ; 

 proboscis greatly elongated, 3-jointed ; fore- 

 wings large, membranous, usually transpa- 

 rent, with few nervures ; legs short, with- 

 out spurs, not formed for leaping. Males 

 possess musical powers. 



2. Family. — Lantern-Flies (Fulgoridae). Antennas 



3-jointed ; ocelli two, placed beneath eyes ; 

 head often dilated into hollow appendages 

 varying in form and size ; proboscis variable in 

 length; wings usually thickly reticulated; legs 

 generally fitted for leaping; spurs of bind feet 

 large. Often secrete a white waxy product. 



3. Family. — Leaping Harvest-Flies (Cercopidae). 



Antennae 3-jointed, the last joint setiform, 

 inserted between the eyes ; ocelli two, on 

 forehead or face ; head rarely produced into a 

 proboscis ; prothorax variable in form and size ; 

 wings usually strongly veined ; legs fitted 

 for leaping, hind-tibiae often spurred. Varied 

 in colour ; found among plants and on trees. 



II. SUR-ORDER. — Dimerous-Homoptera (Dimera). 

 Tarsi 2-jointed ; antennae moderate, filiform, 5 — 



10-jointed; wings sub-areolate. 



