PLATE XXX.

FIG.
1.Brain, spinal chord and ganglions of a full-grown caterpillar of Pontia Brassicæ. a. The brain. b. The double spinal chord. c d. Ganglions with a portion of their nerves.
2.Brain, spinal chord and ganglions, after two days, when the chord is shortened.
3.——————————————— when the animal is become a pupa.
4.——————————————— when it has been a pupa six days.
5.——————————————— just before it assumes the imago.
6.——————————————— when it has become a butterfly. Vol. IV. p. [24]—.
7.Intestinal canal of the caterpillar. a. Saliva vessel. b. Silk reservoir. c. Gullet or œsophagus. d. Stomach. e e e. Bile vessels. f. Large intestine. g. Rectum.
8.—————————————— after it has assumed the pupa two days.
9.—————————————— after eight days. a. Crop or honey-stomach, first showing by the dilatation of the base of the œsophagus.
10.—————————————— a. Honey-stomach become a lateral appendage of the œsophagus b.
11.——————- of the butterfly. a. Honey-stomach. b. Œsophagus. c. Small intestine become very long. d. Rectum. Vol. IV. p. [118].
12.Anal portion of the interior of the female butterfly. a. Ovaries. b. Oviduct. c. Colleterium or varnish secretor. d. Spermatheca or sperm receptacle. e. Part of the spinal chord. f. Rectum. g. A secretory organ filled with a thick white fluid, which is supposed to lubricate the passage. Vol. IV. p. [132], [152].

[PLATE XXI]

[PLATE XXII]

[PLATE XXIII]

[PLATE XXIV]

[PLATE XXV]

[PLATE XXVI]

[PLATE XXVII]

[PLATE XXVIII]

[PLATE XXIX]

[PLATE XXX]

ANATOMICAL INDEX[1695].

Vol. III. p. [353]—.

ORISMOLOGICAL INDEX[1696].

INDEX TO THE GENERA AND SPECIES OF INSECTS NOTICED IN THIS WORK.

Class I. INSECTA. iii. [28].

Subclass I. MANDIBULATA. iv. [375].

Order i. COLEOPTERA. iv. [377].
Order ii. STREPSIPTERA. iv. [378].
Order iii. DERMAPTERA. iv. [379].
Order iv. ORTHOPTERA. iv. [379].
Order v. NEUROPTERA. iv. [380].
Order vi. HYMENOPTERA. iv. [382].

Subclass II. HAUSTELLATA. iv. [373].

Order vii. HEMIPTERA. iv. [385].
Order viii. TRICHOPTERA. iv. [387].
Order ix. LEPIDOPTERA. iv. [389].
Order x. DIPTERA. iv. [390].
Order xi. APHANIPTERA. iv. [391].
Order xii. APTERA. iv. [392][1697].
Suborder i. Hexapoda. iv. [392].
Suborder ii. Octopoda. iv. [393].
Suborder iii. Polypoda. iv. [394].

Class II. ARACHNIDA. iii. [30].

Order i. ARANEIDEA. iv. [396].
Order ii. SCORPIONIDEA. iv. [397].
Order iii. GALEODEA. iv. [397].
Order iv. PHRYNIDEA. iv. [398].
CRUSTACEA.

N.B.—The reader is requested to observe that in the preceding Index, one object has been to point out, wherever it was possible, to what Linnean or Fabrician genus each of the genera included in it may be referred, though no species of it may have been known to those authors. Where a Synonym of any genus is printed in Roman letters, it indicates that such genus is so denominated in the former Editions of this work. The first namer of a genus, together with any author who has written a monograph upon it, or on any tribe, and the more eminent systematists, are usually only quoted. If the reader finds any difference, as is sometimes the case, between the text and the Index, he will be pleased to correct the former by the latter.—For instance, it was not discovered till too late, that the name Uria was pre-occupied in Ornithology;—in the Index this name is altered to Uriata. Doubtful species are printed in Italics.