Scarabaeus macropus, 214. S. ster- 



corarius, 229. 

 Scarites, 242. 



Scarlet dye, cochineal, 149. 325. 

 Scaurus, 270. 

 Scenopinidae, the, 375. 

 Schizodactylus, of China, 348. 

 Scoliada?, 177, 178. 

 Scopuhpedes, solitary bees, 163. 



With hairy legs, 166. 

 Scorpions, of, 68. 384. 

 Scutati, 117, 118. 122. 

 Scutellera, 138, 154. 

 Serica, 218. 

 Sericophorus, 181. 

 Sericostoma, 355. 

 Serpula, 23. 

 Serpulida?, 18. Tube calcareous 



and convoluted, 23. 

 Serpulina, sedentary, 26. 

 Sesise, the brush-tailed, 103. 

 Sexes, characteristics of the, and 



neuters, 171. 173. 179. 182. 264. 



330. 349. 352, et passim. 

 Shells of certain insects, 81. 

 Shrimp, the, Crangon, 391. 

 Siagonium, horns of the, 272. 

 SigaJion, 25. 



Sigara, minute, of Leach, 139. 

 Siliquaria, 22. 

 Silk moths, the, 86. 

 Silkworm, the, 57. 77. Cocoon of 



the, 78. 



Silpha, 266, et passim. 

 Silphidae, 115. 251. 266. 

 Sinodendron, 244. 

 Skipper butterfly, 61. 76. 

 Smerinthus, 101. 

 Solenosthedium, 118. 

 Solipedes, 280. 



Solpugida?, tracheal Arachnidae,385. 

 Spalagia, 181. 

 Spanish flies, of, 320326. 

 Spercheus, 249. 

 Sphanridium, 248, 249. S. scara- 



baaoides, 249. 

 Spha?rocosis, a representation of the 



Coccinellida?, 118. 

 Sphaeroderus, 263. 

 Spheces, a winged group, 177. Nests 



and eggs of, 1-56. 

 Spbecidaa, the, 180. 

 Sphecides, group of the, 79. 151. 153 . 



156. 175. 

 Sphecodes, 162. 

 Sphex, is cosmopolitan, 181. 

 Sphingides, or hawk-moths, 60. 77. 



97. 99. Great divisions of, 100. 

 Sphinx, genus characterised, 86. 

 Sphinx Atropos, 77,78. 101. 

 Sphinxes, rampant caterpillars of 



the, 68. 

 Spiders, of, 68. 380, etseg. Number 



of legs of, 2. 13. 

 Spined caterpillar of Brazil, 64. 



The spines poisonous, 64. 



:x. 405 



Spined cicades, 117. 130137. Other 



insects, thus armed, 270. 

 Spondylis, 285. 

 Squilla, 391. 



Stag-beetles, 136.207. 241. 

 Staphylini, the proper, 271. 

 Staphylinidas, or rove beetles, 115. 



252. 255. 270. 

 Stenida, beetles, 272. 

 Sternapsis, 23. 

 Stings of insects, some of the notices 



of the, 49. 155.178. 

 Stomapoda, or sea-mantises, 391. 

 Streblocera, distorted antenna? of, 



186. 



Strepsiptera, 336. 

 Strongylus, 267. 

 Stylops, parasite, 163. 352. 

 Suctorial process, 126. 

 Suctorial type, the, 61, 62. 137. 393. 

 Swallow- tailed butterflies, 63. 73. 



88. 



Syllis, 25. 



Symbius, a parasitic insect, 332. 

 Synagris, typical, 182. 

 Syphonostoma, 154. 

 Syrtis, 122. 

 Systropha, antennae of, 614. 



T. 



Tachynidae, the, 272. 



Tachytes, the genus, 181. 



Tadpoles, of the, 53. 



Ta?nia, 28. 



Taenioidea of Cuvier, 7- 27. 28. 



Tape-worms, represent the class 

 Vermes, 7. 27. Said to be a com- 

 pound animal, 28. 



Tarantula spider, 384. 



Tefflus, 263. 



Telephorus, universal, 324. 



Tenthredines, the, 154. 



Tenthredo, of tinnasus, 150. 



Terebellidae, 23. 



Termitinae, social habits of the, 341. 

 Their economy, 342, 343. 



Terricoles, belong to Annelides me- 

 sobranchiae, 23. 



Testacea 4. 16. 27. 35, 36. 



Tetratoma, 267. 



Thais, 90. 



Thalassema, Thalassamenidae, 23. 



Thalerophaga, of MacLeay, 237. 



Thalerophagous group, the, 221. 



Thanasimus, on felled trees 334. 



Thecla, 95. T. jurbus, 96. T. lon- 

 ginus, 96. 



Thelyphonus, 384. 



Thrips, the genus, 111. Possesses 

 jaws, 114. Details of these mi- 

 nute insects, 145, et seq. 



Thynnidae, structure of the, 176. 



Thynnus, and its genera, 176. 



Thyreocoris silphoides, 119. 



Thysanura, 63. 393, 



