pa tits or insects. 31 
tervencsTT ^ and Bepidoptera a large plane of one or more joints in- 
nicntione T ]' een ^ le true th° rax and the scutel; and it is to this last- 
evident tb- l ? rsa ^ s P ace that the term thorax is assigned. Hence it is 
consists] ' un S ua S 0 °i Entomology in this point isnot altogether 
is the f]' ’ ,e f ausc "'hat we denominate the collar in lipmcnoptera, 
eons m ,i° raX m Cole optem; and in Coleoptem we lind nothing analo- 
^ Th ■ tl 16 t ^T a ' r °* dle other order, except the collar, 
single ■ l01ax * M hrose insects which have that part consisting of a 
i-asYli *' l , L ' Ce ’ 01 . e f rst segment in such as arc of a compound nature, 
this ¥ '| St pd , U °* ^ e S s aT '^ n S h°m the lower surface, and it is in 
l, n ‘ ‘ u *• 1 * at the muscles which move the head as well as this pair of 
v * * Said 10 ,R oontained. The thorax in different kinds of insects 
cili ^ r ? USI - U l ' ” 1U * oml ’ alu ' affords very excellent generic and spe- 
ttar glnated &T SSOme ^ an “ ud with spine3 ’ others denticulated. 
Pectus, the Breast, is the third segment of the body, or that to which 
™ ur posterior feet are attached, and which is longitudinally di- 
eu at the anterior part of the eiemum. The wings in lepidopterous 
of " °* er '“ sccts . 1,avc thoir origin or base in the superior part 
deviate 1 <• 1C ^V 1 ® 8 anc * elytra in the Coleoptem and Hcmiptem 
back than ii e T [ US> ?? they ari ' P lac ®d more immediately on the 
mwe S “."to hte;wt c ™rs tlie muscles that 
” ' 1 "U'p.and give action to the four posterior legs. This part 
wSt ^ v e^dir ,prCSSed :U " 1 dilated > dm alternate motion of 
lation is supposed to arts; from the action of son™ felf s’troo-' fuf 
“ ll **Hr w 1. 
lii>drt. ^ muscics may assist tire motions of the organs of 
tion of the mi hhe ^ term entomologists define that por- 
hase of the °f th « wlrich is situated between the 
anteriorly in ., -.I,- !, c ^®' us P’. ece terminates in some insects 
lobate; an( j ; ‘ v f a acitc P olilt i in Others it appears rather bi- 
lobe. There «.«• 8 re ? te rmraiber ends obtusely or in an obtuse 
from its mat-nit,, m w l 1IC * 1 tf,e Mutton in remarkable, cither 
the UvdrorhT ' i°t , 'f U ) ' ’ . * n some of the coleopterous tribes, as 
is most “^pi^ous. 
tuated imtnedi'irol Sctaei or Escutcheon : the lobe-like process si- 
insects. The Jt tbe posterior part oi tlie thorax in the scutellate 
tendency is towards*™ inail hlsects > yct its general 
h approaches nearest m f ^ ¥‘ re ' , Iu tho coleopterous tribes 
heart-shaped, wiThtW ^ ¥ ™ ons incline ™re or less to 
' aiE in some of he jr^ f f The samR figure P«- 
the Ilemiptera, In tire Neuroptera, B^nenoptcra. lnd 
