148 
THE STUDY OF INSECTS. 
an ointment made of one part sulphur and four parts lard, 
Scotch snuff, powdered wood ashes, and kerosene emulsion. 
The remedy should be applied thoroughly, and repeated 
several times at intervals of three or four days, in order to 
destroy the young which may hatch after the first application. 
The stable and the places where the cattle are in the habit 
of rubbing should also be whitewashed or sprayed with 
kerosene, or strong kerosene emulsion. 
* 
Suborder HOMOPTERA (Ho-mop'te-ra). 
Cicadas, Leaf-hoppers, Aphids, Scale-bugs and others. 
The Homoptera includes insects of widely diversified 
form, but which agree, however, in having the wings when 
present of the same thickness throughout, and usually slop¬ 
ing roof-like at the sides of the body when at rest, and in 
having the beak arise from the hinder part of the lower side 
of the head (Fig. 140, b). The name is from two Greek 
words: homos, same; and pteron, a wing. 
This suborder includes nine families, which are designated 
as follows: 
The Cicadas, Family ClCADlDAJ (p. 149). 
The Lantern-fly Family, Family Fulgorim: (p. 151). 
The Spittle Insects, Family CERCOPID.E (p. 152). 
The Leaf-hoppers, Family Jasside (p. 153). 
The Tree-hoppers, Family Membracide (p. 154). 
The Jumping Plant-lice, Family PSYLLIDE (p. 155). 
The Plant-lice, Family Aphidide (p. 156). 
The Aleyrodes, Family Aleyrodide (p. 163). 
The Scale-bugs, Family COCCIDE (p. 164). 
Classification of the Homoptera. 
(For advanced students.') 
TABLE FOR DETERMINING THE FAMILIES OF THE HOMOPTERA. 
A. Beak evidently arising from the head ; tarsi three-jointed ; anten¬ 
nae minute, bristle-like. 
