CONTENTS. 



Labium and Mentum 

 B, The Thorax 



Its division into three sef>:ments 



Upper and under surface 



Prothorax .... 

 . Mesothorax .... 



Metathorax .... 



Wino^s 



(«) Membranaceous wings 

 Markings of wings . 



(b) Tegmiiia .... 



(e) Hemelytra 



(rf) Elytra .... 



(e) Halteres . 



(/) Pseudhalteres . 



Legs 



c, The Abdomen 



*^M6-*ec. 2.— Internal Anatomy 



A, The nervous system 



Want of sense of pain in insects 



Senses of insects . 



(a) Sense of sight . 



(ft) .Sense of hearing 



255 



260 

 262 

 265 

 267 

 269 

 272 

 274 

 275 

 278 

 281 



289 



294 

 297 

 299 

 300 

 303 



Pagp 



(c) Sense of smell . . .306 



(rl) Sense of taste . . .308 



(e) Sense of touch . . .309 



B, 1 he digestive system . . 310 



c, The circulatory system . 312 



D, The respiratory system . 314 



E, Tlie muscular system . . 316 



F, The generative system . . 318 



SECTION IV. 



Physiology and instinct of in- 

 sects 318 



Instinct 319 



Instinct for perpetuation of spe- 

 cies 320 



Instinct for self-preservation . 322 

 Modesof defence and attack . 324 



SECTION V. 



Classification of insects 

 Linnaean arrangement 

 Other arrangements . 

 Latreille's last arrangement 



CHAPTER VI. 



ILLUSTRATIONS OF TI 



Order 1.— Coleoptera . . 335 



Characters .... 336 



Habits, &c 341 



Latreille's arrangement . 344 



Order '2.— EurLExoPTEUA . 346 



Characters— Habits . . 347 



Order 3.— Orthoptera . . 349 



Characters— Habits . . 350 



Arrangement .... 352 



Order 4!— Thysanoptera . 359 



Orrf^?- 5.— Hemiptera . . 360 

 Characters . . . .361 



Arrangement .... 362 



Order 6. — Neuroptera . . 364 



Characters — Metamorphoses 366 



Arrangement .... 369 



Order 7. — Trichoptera . . 369 



ORDERS OF PTILOTA. 



Order 8.— Hymenoptera 



('haracters— H abits 



Ilehtions . . . . 



Classification . . . . 

 Order 0. — Lepidoptera . 



Characters — Metamorphoses 



Arrangement . . . . 

 Order 10.— Strepsiptera 

 Order 11.— Diptera 



Characters— Habits 



Metamorphoses 



Arrangement 

 Order 12.— Aphaniptera 



329 



330 

 332 



371 

 376 

 380 

 387 

 389 

 397 

 403 

 407 

 411 

 414 

 417 

 420 

 421 



Alphabetical List of the chief En- 

 tomological "Writers . . 42.1 

 Anatomical Index . . . 431 



LIST OF FIGURES OF INSECTS, 



(kxcluding the dissections,) 

 ARRANGED ACCORDING TO THE PRECEDING CLASSIFICATION- 



