272 BIBLIOGRAPHY OP ECONOMIC ENTOMOLOGY. 



1959. [EiLEY, C. V.] Continued. 

 CHAPTER X: By C. S. Minot. 



Histology of the locust (Caloptenus) and the cricket (Andbrus) 183 



Study of histology of insects, 183-184 Explanations of Figs. 1 and 

 2, Plate II, 185-186 The cuticula, 186-188 The epidermis, 188- 

 189 Sense organs, 189 Nervous system, 190 Tracheae, 191-195 

 Air-sacs and spiracles, 195 Muscles, 195-196 Organs of circu- 

 lation, 196 Connective tissue, 196-198 Ovary, 198-201 Ante- 

 rior caecum of the oviduct, 201 Uterus of locusts, 201-203 Male 

 organs, 203 Testisf, 203-204 Development of the spermatozoa, 

 204, 207 Vasa deferentia, 207 Ductus ejaculatorius^WVesiculat 

 seminales, 207-208 Digestive canal, 208-210 Crop, 210-211 

 Proventriculus, 211-212 Stomach, 212-214 Diverticula, 214- 

 215 Gastro-ileal folds, 215-217 Ileum, 217 Colon, 217-218 

 Rectum, 218-219 Summary on the digestive canal, 219-221 

 Malpighian vessels, 222. 

 CHAPTER XI : By A. S. Packard. 



The brain of the locust 223 



The nervous system in general, 223-224 The brain of insects com- 

 pared with that of vertebrates, 224-226 The brain of the adult 

 locust, 226 Histological elements of the brain, 226-228 The sec- 

 tions of the brain, 228-230 Internal topography of the brain, 

 230 The central body, 230, 231 The mushroom bodies, 231-234 

 The optic lobes, 234 The optic ganglion, 234 The antennal or 

 olfactory lobes, 235 The commissural lobes, 235 The brain of 

 locusts compared with that of other insects, 235-236 Structure 

 of the brain in the embryo locust, 236 The brain of the embryo 

 locust compared with the first thoracic ganglion, 238 The brain 

 in the second embryonic stage, 238-239 Structure of the suboe- 

 sophageal ganglion, 239 The brain of the freshly-hatched larva 

 of Caloptenus spretus, 239 ; of the third larval stage of C. bivittatus, 

 239; of the second or last pupal stage of C. spretus, 240-241 

 Bibliography of the internal structure of the brain of Crustacea 

 and insects, 241-242. 

 CHAPTER XII: By C. V. Riley and C. Thomas. 



Locust ravages in California 242 



Position of the genus Camnula in the (Edipodini, 242-243 Descrip- 

 tion of the genus Camnula, 243 ; of (Edipoda pelludda, 243 ; of 

 (Edipoda atrox, 243-244; of Camnula pelludda, 244-246 The 

 locust in California in 1878, 246 ; in Sierra Valley, 247 ; in the 

 vicinity of Loyalton, 247-248 ; of Sierra ville, 249 History of lo- 

 cust devastation in California, 250 Enemies of the Californian 

 locust, 251 Protective measures, 251-252 Life history of Cam- 

 nula atrox, 252-253 The red or locust mite, 253 Damage done 

 by the locust in Sierra Valley, 254-255 The locust in California 

 in 1879, 255-257 Description of (Edipoda oUiterata, 257-259 Re- 

 marks on Cratypedes Putnami, 259. 

 CHAPTER XIII: By C. V. Riley. 



Further facts about the natural enemies of the locust 259 



Blister-beetle larvae feeding on the eggs of the Californian locust, 

 259-260 Retardation in the development of blister-beetles, aa 

 shown in Epicauta vittata, 260 Philosophy of such retardation, 

 260-261 Eggs of Chauliognathus pennsylvanious, 261 Habits of 

 the young larva, 261-262 Egg-laying of asilid-flies, and particu- 

 larly of Mallophora orcina, 262 Bee-fly larvae common among the 



