ar.) 74.
on the exuviations of sessile Cirripedes, 63.
obligations to, 240.
Mr. Vaughan, on the metamorphoses of Cirripedes, 9, 10.

_Trilasmis_, genus, 99.
_eburnea_, 112.

_Triton_, genus, 156.
_fasciculatus_, 163.

Upopi, or young acari, 18.

Vesiculae seminales, 56.

Valves, general description of, 28.

Valves, chemical nature of, 30.
horny, colour changed by pressure, 184.
primordial, 22.

Wagner, R., on the male organs of generation, 55.

_Xiphidium_, 215.

[Illustration: _Pl. I._

LEPAS.

_George Sowerby._]

[Illustration: _Pl. II._

POECILASMA: DICHELASPIS.

_George Sowerby_]

[Illustration: _Pl. III._

OXYNASPIS: CONCHODERMA: ALEFAS

_George Sowerby_]

[Illustration: _Pl. IV._

ANELASMA: IBLA.

_George Sowerby_]

[Illustration: _Pl. V._

IBLA: SCALPELLUM.

_George Sowerby_]

[Illustration: _Pl. VI._

SCALPELLUM.

_George Sowerby_]

[Illustration: _Pl. VII._

POLLICIPES

_George Sowerby_]

[Illustration: _Pl. VIII._

LITHOTRYA.

_George Sowerby_]

[Illustration: _Pl. IX._

LITHOTRYA. &c.

_George Sowerby_]

[Illustration: _Pl. X._

MANDIBLES, PALPI, MAXILLAE, OUTER MAXILLAE, CIRRI, & CAUDAL APPENDAGES.

_George Sowerby_]

Transcriber's Notes:

Throughout

Ditto is often represented by ---- or . . . . or ".

Page ix

Enclycopaedia of Anatomy and Physiology

'Enclycopaedia' changed to 'Encyclopaedia'.

Page xii

CORRIGENDA AND ADDENDA.

These changes were not added, due to the general nature of most of the
comments.

Page xii

Paecilasma is used throughout (et passim) most of the text.

It should read Poecilasma.

No change from the original.

Page 27

pedunculum mutatae et invoucrum

'invoucrum' changed to 'involucrum'.

Page 57

touch the caeca were such exist

'were' changed to 'where'.

Page 75

References to Mouth parts read Pl. IX, where I believe that Pl. X was
meant. No change except for inserted links that refer to plate X.

Page 136

Magaz. der Gesellsch. Natuforsch.

'Natuforsch' may be 'Naturforsch'.

Page 222

Bold T used to represent a dagger here.

Page 238

Length of whole organ, to the inner margin of
the oblique basal articulation } 1/6000

The number here was not legible, as printed. I think it may be 19/6000
from the table of comparative measurements later in this book.