INDEX 



685 



Myriapoda, 389. 

 Polygastria, 32. 

 Polypi, 125. 137. 151. 

 Pteropoda, 537. 

 Eotifera, 49. 

 Tunicata, 477. 483. 

 Generation, cqnivocal, 43. 78. 87. 115. 

 Eissiparous, 27. 34. 63. 124. 178. 185. 

 Larviparons, 402. Gemmiparous, 29. 

 64. 124. 157. 178. 254. 481. Pupi- 

 parons, 402. 426. Eapid rate of, in 

 Infusoria, 34. 53. 

 Gcrm-ccU, 65. 75. 113. 124. 152. 182. 



259. 276. 478. 525. 566. 570. 636. 

 Germinal vesicle, 52. 112. 181. 213. 



229. 464. 478. 523. 635. 

 Germ-mass, 113. 407. 

 Glaucoma scintillans, 18. 

 Gnathostoma, 99. 

 Gonium, 29. 

 Gordiacea, 58. 

 Gorgonia, 137. 

 Gregarina, 3. 29. 35. 62. 

 Guinea-worm, 96. 

 Gyninosomata, 512. 



Hairs of Anellides, 



of Spiders, 448. 

 Haliotis, 548. 559, 560. 

 Halodactylus, 151, 152. 

 Ilamitc, 597. 

 Haustellata, 346. 

 Hearing, organ of, in 



Cephalopoda, 585. 619. 



Cin-ipedia, 281. 



Crustacea, 311. 



Gastropoda, 553. 



Insecta, 368. 



Lamellibranchiata, 511. 



Pteropoda, 537. 

 Heart, 6. 



In Annulata, 234. 237. 



Arachnida, 454. 



Brachiopoda, 494. 



Cephalopoda, 587. 624. 



Cirripedia, 282. 



Crustacea, 318. 



Echinoderma, 197. 206. 210. 



Epizoa, 272. 



Gastropoda, 559. 



Insecta, 382. 



Lamellibranchiata, 504. 507. 



Polygastria, 25. 



Pteropoda, 537. 



Rotifera, 49. 



Tunicata, 474. 476. 483. 

 Helix, 541. 549. 562. 

 Hemimetabola, 347. 

 Hemiptera, 347. 

 Hermaphrodite, 13. 86. 327. 406. 



Heterogangliata, 13. 470. 



Hexapod insects, 345. 440. 



Hinge of bivalve shells, 515. 



Hive- bee, economy of, 427. 



Holostomata, 575. 



Holothurioidea, 208. 210. 225. 



Homogangliata, 13. 225. 



Humble bee, economy of, 428. 



Hunter, John, 3. 12, 163. 168. 318. 

 His experiment on a fly, 379. On the 

 circulation in Insects, 383. His soft- 

 shelled mollusks, 471. 



Hyalca, 536. 



Hyaline, 32. 465. 



Hydatina, generation of, 52. 



Hydra, 120. 



tuba, 183, 184. 



Hydrozoa, 120. 155. 



Hymenoptera, 347. 353. 441. 



Iclmeumon, parasitic habits of, 417. 



Inferobranchiata, 540, 573. 



Infusoria, 16. Tenacity of life in, 42, 



Siliceous deposits of, 37. 

 Ink of Cuttle-fish, 623. 

 Insect metamorphosis, 422. Analogy of 



development of human embryo with, 



438. Of Marsupialia with, 439. Of 



Batrachia with, 439. 

 Insecta, 344. Orders of, 440. Wings 



of, 347. 

 Instrumenta cibaria, 373. 

 Invertebrata, 11. 

 Isopoda, 305. 343. 

 lulus, 348. 356. 392, 393, 394. 



Janthina, 565. 



Lremodipoda, 343. 

 Lamellibranchiata, 471. 503. 531. 

 Land-crabs, 322. 341. 

 Larva, animals typified by in Insects, 



definition of, 422. 

 Leech, 228. Stomachs of, 104. Suckers 



of, 229. Teeth of, 230. Eyes of, 248. 



Genitals of, 254. 

 Leeuwenhoek, 17. 54. 522. 

 Lepadoids, 278. 295. 

 Lepas, 277. Its shell, 278. Its nervous 



system, 280. Its digestive system, 



282. Its larva, 288. 

 Lepidoptera, 347. 353. 441. 

 Lerna^a, 267. 

 Leucophrys, 24. 

 Levigrada, 468. 

 Ligament, 515. 

 Limnceus, 553. 569. 

 Limulus, 298. 312. 343. 

 Linguatula, 101. 

 Lingulida;, 503. 

 Linnaeus, 1. 9. 



