INDEX. 



421 



fig-; cuter crust of, 'in,fig-; 

 nest, extraordinary number 

 of cells in a, 78 



Soldiers, duties of, among ter- 

 mites, M. 331 



Solitary bee (Halictus), pro- 

 ceedings of, T. 53 



Solitary wasp, (Cerceris), stra- 

 tagems of, T. 54 



Sounds of insects not from the 

 mouth, M. 87 ; impercepti- 

 ble to certain ears, 102 



Specific gravity of insect-eggs, 

 T. 15 



Specimens, arrangement of, M. 

 379 



Sphcerobulus, plants of, show- 

 ing the projection of the 

 seeds, T. 26,/is. 



Sphingid(E, Leach, T. 71. 185. 

 360 



Sphinx Ligustri, T. 125,fig.; 

 185; pupa of, 300,/?^. 



Spider, raft building, A. 363 ; 

 diving water, 365 ; proceed- 

 ings of a, in a steam-boat, 

 368 



Spiders not properly insects, 

 A. 335 ; apparatus for spin- 

 ning, 335 ; structures of, 

 335; suspended by a thread 

 from the spinneret, 336, fig. ; 

 extraordinary number of 

 spinnerules in, 337, fig. ; 

 thread of, magnified, 338, 

 fig. ; shooting of the lines 

 of, 339 ; mode of attaching 

 the ends of their threads, 

 339,/jg. ; gossamer, account 

 of the ascent of, 346 ; nests, 

 webs, and nets of, 354 ; sat- 

 in, nest of, 354 ; geometric 

 net of, 359, fig. ; nest, 

 hinged door of a, 365J ; nest 

 from the West Indies, with 

 a spring hinge, 362 ; clean 

 liness of, 366 ; claws, struc 

 ture of, 367, fig. ; puttin{ 

 VOL. XII. 



their webs, fanciful account 

 of, 368 ; singularities of, T. 

 79 ; nests, curious, 24, fig. ; 

 and caterpillars, methods of 

 ascending their threads, 186, 

 fig.; mode of combing them- 

 selves, 358 ; walking on wa- 

 ter, 382 ; springing of, upon 

 their prey, 394 ; flying with- 

 out wings, 397 ; legs of, M. 

 4 ; alleged to be blind, 119 ; 

 various arranc;ements of the 

 eyes of, 127, i'2^,figs. ; dis- 

 sociality of, 207 ; emigration 

 of young, 281 



Spider-flies, T. Il7,/i^. 



Spinneret of spiders an organ 

 oftouch, M.6 



Spinning caterpillars, A. 306. 

 322 ; structure of the legs 

 and feet of, 307 ; internal 

 structure of, 309 



Spontaneous generation, theo- 

 ry of, T. 10 



Sportive movements not neces- 

 sarily social, T. 367 



Spring-tail, leaping position of, 

 T.394,/,-g. 



Stag beetle, M. 10, fig.; jaws 

 of the, 145 ; male and fe- 

 male, 211,/jg. 



Staphylirdda, A. 240 ; T. 231 ; 

 M. 53 



Slauropns Fagi, Germar., T. 

 ^53, fig. 



Stemmata, or coronet eyes, 

 M. 127 



Stephens's breeding cage, M. 

 363; classification, M. 393 



Stethoscope compared to an- 

 tenna;, M 117 



Sting of the Lee described, M. 

 325, fig. 



Stomach of the caterpillar, re- 

 markable change in the ca- 

 pacity of the, T. 198 

 I Stomoxys calcilrons, M. 202 

 \ Stomox'i/dc£, Meigen, M. 202 

 38* 



