870 
Protozoa, 285 
Pseudastacus, 343 
Pylorus, 52 
R. 
Race, 292 
RATHKE, quoted, 356 
REAUMUR, quoted, 33 
Reflex action, 108 
REICHENBACH, quoted, 356 
Renal organ, see Green-gland 
Reproduction of lost limbs, 38 
sexual, 39, 128, 135, 350 
Reproductive organs, 128 
development of, 225 
Respiration, anal, 353 
Respiratory organs, see Branchiz 
Retropinna, 315 
ROBIN, quoted, 352 
Rock lobster, see Palinurus 
ROESEL VON ROSENHOF, quoted, 
41, 43 
RONDOLETIUS, referred to, 4 
Rostrum, 157 
development of, 217 
8. 
Salivary glands, 352 
Salmonide, parallel between their 
distribution, and that of Asta- 
cida@, 315 
Sarcolemma, 90, 182 
Sas, G. O., referred to, 327 
SARTORIUS VON WALTERHAUSEN, 
quoted, 322 
Scaphognathite, 80, 170 
Schizopod stage of development, 
280 
SCHLUTER, 317 
INDEX. 
ScHMIDT, O., quoted, 354 
ScCHRANK, 290 
Science, physical, 3 
Science and common sense, 1 
Segmentation, 174 
Self-causation, 112 
Sensory organs, 113 
Septal line, 183 
zone, 183 
Setz, 197 
Shrimp, see Crangon 
SIEBOLD, Von, referred to, 331 
Sight, organ of, 118 
Sinus, sternal, 69 
Smell, organ of, 114 
Somite, 143, 161, 355 
abdominal, 142 
cephalic, 154 
thoracic, 150 
SoUBEIRAN, M., quoted, 349 
Southern Crayfishes, 249 
Species, 243, 290 
morphological, 291 
physiological, 296 
Spermatozoa, 129, 135, 354 
Spontaneous action, 112 
Squame of antenna, 172 
Steinkrebs, see Astacus torrentium 
Sternum, 96, 143 
Stomach, 29, 51 
Stone-crayfish, see Astacus torren- 
tium 
Striated spindle, 121 
Swimmeret, 20 
T. 
Taste, organ of, 115 
Teleology, 47, 137 
Tendon, 92, 175 
