623 



Sericteria, 325 



>. P.ot-fly, 482 



s.-n-k'ornia. 1X!>, ,.'/./, 355 



Sesia, 3*7 : S. a rmis, 321 



3 ildae, 386, 3SS, 370 (for Syiitomidae), 



Setae, 534 f. ; aerostatic, 403 



Setina, 410 



Seventeen-year Cicada, 569 



Sex, differences, 92, 95 ; production of, 



32, 67 ; in larva, 325 

 Sexuparous, 586 



Sharp, on classification of Dytiscidae, 213 n. 

 Sheep, bot-fly, 517 ; -tick, 518 

 Shit-Id. 592 

 Shoulder, -lappets, 312 ; -tufts, 312 ; of 



wing, 319, 316 



!<iiliji,llil, 206 



Sieulodidae, 423 



Siebold, von, on Strepsiptera, 301 



Siyara minutissima, 568 



Sight, of Pompilus, 104 



Silk-glands, 325 



Silkworm, 375 ; affected by parasitic fly, 



507, 508 ; Madagascar-, 405 

 Stlji//ft, 221 ; Silpha atrata, S. laevigata, 



S. If JIJK in ii'n, 222 ; S. obscura, 222 ; <?. 



I'/icca, S. thoracica, 222 

 Silphidae, 221 f., 252, 256 

 Si i/i a, 16S ; S. leviceps, stridulating organ, 



169 ; S. rufoniiji-u, 169 

 Siniuliidae, 477 

 Sim ill iii in coh> mlmczfiise, 477 

 Siinnlfndron cylindricum, 194 

 Siphon, 563, 581, 589 

 Siphonaptera, 522 f. 

 Siphonophora, 239 

 Siphunculata, 600 

 si furls, 33 ; S. humeralis, 272 

 Sitmlrrpa, 247 

 Skippers, 363 



Slave-making ant, 149, 150, 163 

 Sloth, 430 

 Slug-worms, 402 

 Smallest Insect, 228 

 Smeriuthini, 380 

 Smerinthus populi, 309, 381 

 Smith. F., on Mel I inn* nrrensis. 123 

 Snails, enemies of, 205, 222, 510 ; parasite 



of, 495 



Social, bees, 35 ; wasps, 78, 84 

 s.riules, 20, 53 f. 



Si In n a in dulcamara, beetle on, 232 

 Soldiers, 132 

 Soldier-ant, 150 

 Svlcno>>:<i, :!95, 430 

 Soli imiixixfiiijax, 137 

 Solitary wasps see Fossores and Enine- 



nidae 



Song, of Cicada., 572 

 Soronia, 232 

 Sound-organs, 448 ; of Ayeronia, 354 ; of 



JJecatesia, 371 ; of rii-m/n, ;>7':>, 574 



see also stridulating organs 

 Sound-production, 155, 156 ; by Aego 



411; by Arctiidae, 41(1 ; by Sphingidai . 



382 see also Stridulation 

 Spalacopsini, 288 

 Spatula, 459 



Spencer, Herbert, on Weismann, 143 

 fyerchetts emarginatus, 218, 219 

 Spermatheca, 320, 321 

 Spermophila, 506 

 Sphaeridiides, 219 

 Sphaeriidae, 227 

 Xjihacrites, 223 

 Sphaeritides, 229 

 Sjihaerius acaroides, 227 

 Sphaerocarides, 279 

 Sphecia, 387 

 Sphecius speciosus, 123 

 Sphecodes, 21, 22 ; S. gibbus, 23, 23 : X 



rubicundus, 22 ; S. svJbqucLdratus, 23 

 Sphegidae, 93, 107 f. 

 Sphegides, 107 f. 

 8phex coeruleus, 110 ; f*.jl<irijifimix, 108 ; 



S. lobatus, 110; S. maxillosus, 108 

 Sphindidae. 245 



Sphingidae, 309, 315, 316, 368, 380 f. 

 Sphinx ligustri, 380 

 Spider parasite, 490 

 Spilosoma, 408 



Spinneret, 324, 325, 403, 417 

 Sjiirachtha, 227 

 Spiracles, 188, 191 ; of Diptera, 449 f. ; 



of Hippoboscidae, 519; of Lepidoptera, 



313, 314 ; of Lipctra, 451 : of Nepa, 



564 ; of Thrips, 528 

 Spondyliaspis, 581 

 Spondylidae. 288 

 Springing plant-lice, 579 

 Spuler, on nervures, 317 n. 

 Squama, 448 

 Squeakers, 209 

 S/iii-f/n-ri/iia, 401 

 Stag-beetles, 193 

 Stalk, 317, 319 

 Staphylinidae, 223, 224 f. 

 Staudinger, Schatz and Kober, on lnitti-i- 



tlies, 343 u. 



marorrmii'v, 489 



i, 385 

 Stelis minuta, 29; S. nasi'.ti'., 30, 43; S. 



sittnalii. 30 

 Stelocyttares, 81 

 S/i'i/n in i/ni i'-i stwoodi, 1.59 

 Stenopteryx Ini-niiiliiiia, 519 

 Stephostethus, 240 

 Sternorhyncha, .544 

 Sterrhopteryx, 394 

 | Stetliopailiidae, 496 

 I Stigmata see Spiracles 



sti<t, i,<it ilium. 180 

 , Stigmus pendulus, 128 



