CONTENTS. 



bsroArW 



CHAPTER VI. 



PAO8 



OF THE CLASS OF FISHES ........ 1 



ORDER I. ACANTHOPTERYGII 28 



ORDER II. MALACOPTERYGII ABDOMINALKS . . 41 



ORDER III. MALACOPTERYGII SUB-BRACHIATI ... 48 



ORDER IV. MALACOPTERYGII APODA 51 



ORDER V. LOPHOBRANCHII ...... 53 



ORDER VI. PLECTOGNATHI 54 



ORDER VII. CHONDROPTERYGII BRANCHIIS LIBERIS . . 57 



ORDER VIII. CHONDROPTERYGII BRANCHIIS FIXIS . . . 58 



ORDER IX. CYCLOSTOMATA 63 



CHAPTER VII. 



GENERAL CHARACTERS OF ARTICULATED ANIMALS . . . . 74 



CHAPTER VIII. 



OF THE CLASS OF INSECTS ........ 84 



SUB-CLASS A. WINGED INSECTS . . . . . . 115 



ORDER I. COLEOPTERA, OR BEETLES . . . .117 



ORDER II. ORTHOPTEHA . . . . . . . 137 



ORDKR III. NEUROPTERA . . . . . .147 



ORDER IV. HYMENOPTERA 156 



ORDER V. LEPIDOPTERA . . . . . .172 



ORDER VI. HOMOPTERA .... . . 186 



ORDER VII. HETEROPTERA 192 



ORDER VIII.- DJPTERA 195 



SUB-CLASS B. APTEROUS INSECTS ...... 205 



ORDER IX. APHANIPTERA ...... ib. 



ORDFR X. ANOPLURA 206 



ORDER XI. THYSANOURA 207 



