420 



INDEX. 



Sampson's lion, bees in, ac- 

 counted for, T. 7 



Sanguine ants, tactics of, M. 

 341 



Sarcophaga carnaria, Meigen, 

 T. 110 



Saturnia Pavonia, A. 320; T. 

 186; 312; 315 



Savigny's theory, M. 203 



Saw-flies, A. 152 



Saw-fly, ovipositor of the, A. 

 153, fig.., 154, /{g. ; coinb- 

 toolhed rasp and saw of the, 

 ISO), fig. ; grooves cut by it 

 in tlie rose-tree, 158, fig. ; 

 of the gooseberrv caterpillar, 

 eggs, .tc, T. 215, figs. ; of 

 the osier, caterpillars of, 217, 

 fig. ; of the alder, caterpil- 

 lars of, 217,/ig. 



ScarabcBvs pilularius, Linn., A. 

 251 ; 253 



Scalophaga stercoraria, Meigen, 

 T. 44 



Schirach's discovery, M. 311 



ScolopendridcE, Leach, T. 384 



Scolylus destructor, Geoffr., T. 

 245 



Scouts sent out by bees, M. 

 284 



Scotch-fir, pseudo gall of the, 

 A. 399,/i^, 



Sea-egg, T.42,/z>. 



Sea, phosphorescence of, M. 

 233 



Seeds of plants, diffusion of, 

 T. 24 



Seioptera vibrans, Kirby, T. 

 362; experiment on, 362 



Selandria Alni, Steph., T. 217 



Sembling successful and un- 

 successful, M. 216 



Semblis viridis, T. 402 



Semblis bilineata, T. 403 



Senses of insects, M. 1 



Sentinel ants, M. 298 



Sentinel wasps, M. 307 



Setting of insects, M. 376 



Sexes, distinctive marks of, 

 M.210 



Sick ants ill treated, M. 305 



Silk, history of the introduc- 

 tion of, A. 318 



Silk-tube, side view of, A. 

 310, fig. ; section of, mag- 

 nified, 310,/j^. 



Silk-worm, progressive in- 

 crease of the, T. 167 ; growth 

 of the, compared with that 

 of birds, 168 ; increase of 

 the weight of the, within 

 thirty days, 197; Malpighi's 

 account of the transforma- 

 tions of the, 339, A. 313; 

 transformations of, 314; the 

 parts of the cocoons of, 

 which are used in our manu- 

 factures, 317; varieties and 

 species of, 320 ; Count Dan- 

 dolo's experiments on, T. 

 167 



Sijlplia Lapponica, M. 153 



SilphidcF, M. 53 



Slave making ants, M. 342 



Sleep of the senses not equally 

 profound, T. 406 



Slug-worm of North America, 

 T. 217 



Smell in insects, M. 44; the 

 males guided by, 215. 



Smcrinthus populi, T. 71 



Snapdragon, with bees enter- 

 ing the flowers, M. A9.,figs. 



Social leaf-mining caterpillars, 

 A. 208 



Social spinning caterfWllars, 

 A. 329 



Sociality of insects, causes of, 

 M. 208 



Social wasps, A. 71 ; nest of, 

 founded by a single female, 

 71 ; nest of, compared to 

 that of the burrowing-owl, 

 72; nest, materials of, 74; 

 nests, structure of, I'd, fig. ; 

 nest, suspension rod of, 77, 



