Chapter I: Front Matter

_Engraved by W. T. Fry._

_William Kirby. M.A. F.R. L.S. &c_

_Published by Longman & C^o. London, July, 1825_.]

AN
INTRODUCTION
TO
ENTOMOLOGY:

OR

ELEMENTS
OF THE
_NATURAL HISTORY OF INSECTS:_

WITH PLATES.

BY WILLIAM KIRBY, M.A. F.R. AND L.S.
RECTOR OF BARHAM,

AND

WILLIAM SPENCE, ESQ. F.L.S.

VOL. III.

_LONDON:_
PRINTED FOR
LONGMAN, REES, ORME, BROWN, AND GREEN,
PATERNOSTER ROW.

1826.

PRINTED BY RICHARD TAYLOR,
SHOE LANE, LONDON.

ADVERTISEMENT.

The publication of the concluding volumes of the "Introduction to Entomology" has been unavoidably delayed by the continued ill health of one of the Authors, which has devolved upon the other a considerable increase of labour, and demanded a greater expenditure of time than would otherwise have been required: for though Mr. SPENCE put every facility in Mr. KIRBY'S power, and had drawn up a rough copy of every Letter belonging to his department; yet, as most of them had been written several years ago, many curious facts, and a great variety of interesting information subsequently derived from various sources, were necessarily to be inserted, and the whole to be prepared for the press.

When the thousands of objects that were to be examined, and many of them repeatedly, in composing the Letters on the External Anatomy of Insects, are considered, it will not appear surprising if some errors should have crept in; especially as Mr. KIRBY was deprived of the effectual help formerly derived from the acumen, learning, and judgement of his esteemed coadjutor, by his lamented and protracted indisposition: but it is hoped that these errors will be found of minor importance, and not to affect any general principles advanced. The same remarks are also in part applicable to the Anatomical and Orismological Tables (VOL. III. p. 354-393, and VOL. IV. p. 257-354), which were drawn up by the Authors jointly many years ago, before any other portion of the work was composed, but which have, especially the former, required considerable alterations and additions in consequence of subsequent observations and information.

It will not be amiss here to state, in order to obviate any charge of inconsistency in the possible event of Mr. KIRBY'S adverting in any other work to this subject, that though on every material point the authors have agreed in opinion, their views of the _theory of instinct_ do not precisely accord. That given in the second and fourth volumes is from the pen of Mr. SPENCE.

It was originally intended, as mentioned in the Preface, to have given a complete list of Entomological works, of which a large portion was drawn up; but the great length to which more important matters have extended, has rendered necessary the intire omission of this list,--an omission in some degree compensated by the catalogue of _Authors quoted_, which comprises most of the standard Entomological works.

ERRATA.

Page. Line.

29 27, _for_ Pseudo-c_o_rdia _read_ Pseudo-c_a_rdia.

33 7, _for_ 1/12 _read_ 1-1/2.

35 7 and elsewhere, _for_ Gigas _read_ grandis.

46 16, _for_ number and situation _read_ in some respects.

98 6, _for_ Furtina _read_ Jurtina.

121 note^d, _for c read c´._

135 note^b, _for_ XXIV. _read_ XXIII.

137 note^a, _for_ 17 _read_ 18.

251 4, _for_ ten _read_ nine.

378 10, } _for_ frœnum _read_ frænum.
359 21, }

422 note^b, _for_ a´ _read_ a´´.

425 note^b, _for_ b´´ _read_ b´.

471 1, _dele_ Pelecotoma.

10, _for_ orbicular _read_ subtriangular.

512 antepenult. _After_ genera _insert_ except in some _Acridæ_, as
_A. viridissima_.

562 note^c, _for_ πνεω _read_ πνυμι.

606 5, _for_ Heteropterous _read_ Homopterous.

DIRECTIONS TO THE BINDER.

The Synoptical Table of the Nomenclature of the Parts of the External Crust of Insects should be placed opposite to page 354.

Plates VI-XX. should be placed in this Volume, and the remainder in the Fourth.

It is however suggested to Purchasers, that in binding complete Sets of the Work, a separate Volume may be formed of the Synoptical Table, the Plates and their Explanations, and the Indexes.

CONTENTS OF VOL. III.

Letter. Page.

XXVIII. Definition of the Term _Insect_ 1-51

XXIX. States of Insects. _Egg state_ 52-104

XXX. The same Subject continued. _Larva
state_ 105-237

XXXI. The same Subject continued. _Pupa
state_ 238-290

XXXII. The same Subject continued. _Imago
state_ 291-347

XXXIII. External Anatomy of Insects. _Terms
and their Definition_ 348-393

XXXIV. The same Subject continued. _The Head
and its Parts_ 394-528

XXXV. The same Subject continued. _The
Trunk and its Parts and Organs_ 529-697

XXXVI. The same Subject continued. _The Abdomen
and its Parts_ 698-720

NOTICE RESPECTING VOL. I. AND II.

It being judged expedient, since the publication of the last Edition of the first and second Volumes of this Work, to adopt a new plan with respect to the reference letters of the Plates, the Reader is requested to make the following corrections in those Volumes.

VOL. I.

Page. Note.

125 ^e, _for_ f, d _read_ a´´.

273 ^a, _for_ a _read_ _a_.

395 ^a, _for_ 29, 30 _read_ 13.

VOL. II.

244 ^c, _for_ a _read_ _a_.

319 ^b, _for_ 10 _read_ 14.

348 ^a, _for a read e´´´._

353 ^a, _for_ 7--. _read_ 16--.

366 ^b, _for a read s´´, v´´´._

^c, _for b read t´´._

405 ^a, _for_ 1.8. aa _read_ 18. _c_†.

^b, _for_ bb _read_ _q´´´_.

406 ^e, _for_ bb _read_ _C´´_.

407 ^e, _for_ cc _read_ _C´´ C´´_, which represent the bundles of
muscles in connexion with the drums. In the above
figure the mirror is the part directly under those
bundles.

AN