12 TRUE BUGS. 
infusion of tobacco, an ointment made of one part sulphur and 
four parts lard, Scotch snuff, powdered wood ashes, and kero- 
sene emulsion, thoroughly and repeatedly applied at intervals 
of three or four days, to destroy the young hatching after the 
first application, are all good and well tried remedies. Of course 
cleanliness is all important, and the stables should be kept scrupu- 
lously clean, so that they no longer deserve the name “stables,” 
given now to rather unclean outhouses. 
SUB-ORDER HETEROPTERA. 
(True Bugs). 
The term Heteroptera is composed of two Greek words, 
heteros diverse, and pteron, a wing. The name is well chosen, 
because it expresses the fact already mentioned that the upper 
wing is composed of two diverse parts, quite different from 
each other. The sub-order differs from the Homoptera in the 
composition and position of the wing-covers, and in the direc- 
tion of the head. The wing-covers are laid flat on the back, 
and are composed of three well separated pieces, corium, clavus, 
and membrane, Fig. 5. All of these parts are modified in a 
great variety of ways. 
The head is placed horizontally, being fastened in a hollow 
in the anterior portion of the prothorax; the beak is attached to 
or directly beneath the tip, with the exception that in the 
Corisidz the head overlaps the front of the prothorax. The pro- 
thorax is a large and free segment, with a distinctly segmented 
scutellum. The head usually carries two ocelli, never three, 
which are situated on the vertex; they are absent in a few genera, 
and in all of the younger stages. 
This sub-order is divided into two great sections, based upon 
modification of the antenn@ or feelers. The following synopsis, 
copied from Prof. Comstock, will assist the reader. As he says, 
much more thorough study is still needed before a synopsis can 
be given which is based upon the development of these insects. 
