12 Flemipteva-fleteroptera. 
There are few localities which may not be hopefully 
searched for Hemiptera, but the largest results may be ob- 
tained by sweeping and beating ; certain species are to be 
found only on their particular food plant, others seem to 
occur indifferently on plants of various natures ; for sweep- 
ing purposes a strong brown holland bag-net on a landing- 
net ring, screwed into the end of a thick oak stick is about 
the most useful implement, and for beating, an umbrella 
covered with brown holland ; marshy localities are good for 
Saldidze, etc., which run or jump on the mud, and Sphagnum 
in some districts produces good species; moss, rubbish, 
dead leaves and all such localities have their specialities 
and a few occur under bark ; there are also many water 
species, and one genus, Aépophilus, occurs on the sea shore 
below high-water mark, so that practically no locality 
should be passed over. Oaks, ashes, sallows, birches and 
firs are perhaps the most productive trees, although there 
are few that do not yield something to the collector; the 
most productive months are July, August and September, 
but many of the Hemiptera hybernate, so that they may be 
sought for all the year round with more or less success. 
TABLE OF FAMILIES. 
(24) 1. Antennz free not hidden . . GYMNOCERATA. 
(21) 2. Abdomen not clothed beneath with a 
silvery velvety pubescence—species ~ 
not aquatic : 
(4) 38. Scutellum reaching at least to the base 
ofthe membrane. . PENTATOMIDA. 
(3) 4. Scutellum not reaching to the base of 
the membrane * 
(18) 5. Mesopleurs and metapleur ae > composed 
of one piece only, dnd without a 
cuneus : 
}. Tarsi 3-jointed 
. Rostrum not bent at the base, lying 
in repose against the under surface 
of the head 
~~ 
eo = 
Swarm 
NI 
* Except in Aradide. 
