X CONTENTS 



CHAPTER. PAGE. 



III. THE HABITS OF ANTS, 247 



IV. FORM AND FUNCTION, 250 



Aids in the Laboratory, 251. Preparation of Speci- 

 men, 253. Terms vised in Defining Position and Direc- 

 tions, 254. 



External Divisions of the Body, 255. The Head, 

 255. The Thorax, 255. The Abdomen, 255. 



The Head, 255. 



Fixed Parts of the Head, 255. Compound Eyes, 



255. Simple Eyes, 256. Epicranium, 250. Front, 



256. Genae, 256. Vertex, 257. Clypeus, 257. 

 Movable Parts of the Head, 257. Antennae, 257 



Mouth-parts, 258. Labrum, 258. Mandibles, 258. 



Maxillae, 258. Lacinia, 259. Galea, 259. Palpus, 



259. Labium, 259. Hypopharynx, 260. 



The Thorax, 200. Prothorax, 260. Prothoracic Leg, 

 261. Coxa, 261. Trochanter, 261. Femur, 261. 

 Tibia, 261. 



Mesothorax, 261. Episternum, 261. Parapteron, 

 262. Epimeron, 262. Ventral View, 262. Dorsal 

 View, 263. 



Mctathorax, 263. Dorsal View, 263. Lateral View, 

 263. Episternum, 263. Epimeron, 203. Ventral 

 View, 263. The Metasternum, 263. Metathoracic 

 Leg, 264. 



The Wings, 264. Mesothoracic Wing, 265. Meta- 

 thoracie Wing, 265. 



The Abdomen. The First Segment, 260. The Audi- 

 tory Organs, 266. Second to Eighth Segments, 266. 

 Caudal Portion of Abdomen of Male. 267. Caudal Por- 

 tion of the Abdomen of the Female, 268. Ovipositor, 

 268. Egg Guide, 268. Spiracles, 268. 



Internal Divisions of the Body, 269. Digestive Tract, 

 269.- Nervous System, 272. Respiratory System, 272. 

 Circulatory System, 275. Reproductive System, 276. 



The Beetle, 276. 



Mouthparts of the Cicada, 279, 



