368 
Homarina, 261 
Homarus, 13, 42, 257, 332 
Homology, homologous, homolo- 
gue, 148 
Hoploparia, 342 
Hypoblast, 212 
I 
Idothea, 323, 334 
Impregnation, 135, 350 
Integument, 50 
Interseptal zone, 183 
Tntestine, 29, 61 
Ischiopodite, 165 
J. 
Japanese Crayfishes, 313, 314 
Jaws, 23 : : 
JOHNSTON, J., quoted, 42 
K, 
KESSLER, quoted, 298, 304 
Kidney, see Green gland 
KLUNZINGER, referred to, 330 
L. 
Labrum, 51 
development of, 218 
LAMARCK, referred to, 4 
LEREBOULLET, quoted, 353 
Legs, ambulatory, 168 
LEMOIN#, referred to, 353 
LEYDIG, referred to, 115, 353 
Liver, 30, 64 
development of, 223 
nature of secretion, 352 
Lobster, common, see Homarus 
Norway, see Vephrops 
INDEX. 
Lobster, Rock, see Palinurus 
LoveEn, referred to, 327 
M. 
Machine, living, 128 
M‘Intosu, Dr. W. C., quoted, 288 
Mandible, 23, 51, 170 
development of, 214 
Martens, VON, 306 
Mastodon mirificus, occurring with 
fossil crayfishes, 316 
Maxille, 23, 170 
Maxillipedes, 23, 164 
Medullary groove, 213 
Megalopa stage of development, 
283 
Meropodite, 165 
Mesoblast, 212 
Mesoderm, 141 
Mesophragm, 158 
Metamere, 143 
Metastoma, 51 
Metope, 278 
Midgut, 61 
development of, 211, 214, 223 
MILNE-EDWARDS, quoted, 13, 289 
Mollusca, 284 
Morphology, 46, 138 
comparative, 230 
Mortality of crayfishes, 128 
Morula, 206 
Mosaic vision, 122, 354 
Motor plates, 189 
Mouth, 51 
MULLER, JOHANNES, referred to, 
122 
Muscle, 57, 90, 175, 181 
development of, 224 
histology of, 90, 181 
Muscles of abdomen, 99 
