INDEX. 



367 



Epistoma, 155 

 Epithelium, 140, 177 

 Equusexcelsns, occurring with fossil 



crayfishes, 316 

 Eryma, 341 



Evolution of crayfishes, 331 

 Excretion, organs of, 82 

 Exopodite, 145 

 Exoskeleton, 17 



chemical composition, 347 

 Eye, 118 



compound, 122 



development of, 225 

 Eye-stalk, 24. 173 



development of , 2] 4 



Family, 252 

 Fat-cells, 180 

 Fibre, muscular, 185 

 Fibril, muscular, 185 

 Figian Crayfishes, 306 

 Filament, muscular, 185 

 Filter of stomach, 58 

 Flagellum, 167 

 Food-yelk, 206 

 Foot-jaws, see maxillipedea 

 Forceps, 22 

 Foregut, 61 



development of, 213, 222 

 Fossil crayfishes, 316 

 Fostek, Dr. M., referred to, 110 

 France, consumption of crayfish 



in, 10 

 Function, 22 



G. 



(ialaxidm, 315 

 Qammarus, 323 

 Ganglion, 103, 105 

 Garglionic corpuscle, 87, 103 



Gastric mill, 53 

 Gastrolith, 29, 347 



chemical composition, 349 

 Gastrula, 211 

 GAY, quoted, 356 

 Genus, 249 



Geographical distribution, see Dis- 

 tribution 

 Geebb, M., quoted, 350 

 Germinal disc, 209 



layer, 206 



spot, 133 



vesicle, 133 

 Geestfeldt, Dr., quoted, 200 

 Gills, see Branchiae 

 GlBAED, quoted, 356 

 Gobup-Besanez, quoted, 353 

 Green-gland, 83, 353 



development of, 224 

 Gbobben, Dr., quoted, 354 

 Growth of crayfish, 31, 349 

 Guanin, 82, 353 

 Gullet, 6ee (Esophagus 

 Gunthee, Dr., quoted, 315 



H. 

 Hagen, Dr., quoted, 305, 312 

 Haplockitonidce, 315 

 Haevey, quoted. 5 

 Head, see Cephalon 

 Hearing, organ of, 116 

 Heart, 27, 71 



development of, 224 

 Helleb, Dr., quoted, 298, 330 

 Hepatic duct, see Bile duct 

 Hind gut, 61 



development of, 214, 223 

 Histology, 175 

 Hntridhdella, 356 

 Ilomaridce, 263 



