964 



INDEX 



Reproductive system of pigeon, 754. 



of rabbit, S09. 



of scorpion, 416. 



— - — of sea-urchin, 304. 



of Sepia, 464. 



of skate, 605. 



of spider, 420. 



of sponges, 160. 



— - — of starfish, 297. 



• of Vertebrates, 570. 



of Vol vox, 122. 



Reptilia, 4, 683. 



— and Birds, 4, 683, 724. 



— development of, 717. 



— extinct, 719. 



— relationships of, 722. 

 Respiration in Animals, 33. 



— physiology of, in animals, 34. 

 Respiratory organs, 34. 



— ■ system of Acarina, 422. 



of Amphioxus, 520. 



of Anodonta, 452. 



— ■ — of Arenicola, 261. 



— — of Ascidian, 502. 



— — of Balanoglossus, 493. 

 of bee, 382. 



of Chelonia, 680. 



of cockroach, 375. 



— ■ — -of crab, 338. 



— — of crayfish, 331. 



of Crocodilia, 713. 



of Crustacea, 356. 



of dogfish, 613. 



of frog, 667. 



of haddock, 623. 



of Helix, 441. 



of Insects, 391. 



of Limulus, 427. 



of Lizards, 700. 



of lung-fish, 646. 



— ■ — of Myxine, 577. 



of Peripatus, 364. 



of Petromyzon, 582. 



of pigeon, 752. 



of rabbit, 808. 



of scorpion, 416. 



-of sea-urchin, 304. 



of Sepia, 462. 



of skate, 602. 



^ of spider, 420. 



of starfish, 295. 



of Tracheata, 361. 



of Vertebrates, 564. 



Respiratory tree of Holothurian, 308. 

 Retia mirabilia of Cetacea, 8O3. 

 of haddock, 623. 



of Sirenia, 845. 



Reticularia, 131. 

 Reticulum, 851. 

 Retina, 552. 

 — of Cephalopods, 460. 

 Retinula, 328. 

 Reversion, 107. 

 Rhabdites, 75, 212. 

 Rhabdocoela, 214. 

 Rhabdocoelida, 214. 



Rhabdom, 328. 



Rhabdonema, 240. 



Rhabdopleura, 285, 489, 498. 



Rhamphorhynchus, 721. 



Rhea, 729, 770. 



Rhinoceros, 852, 856. 



Rhinocerotidff, 856. 



Rhinodenna, 682. 



Rhinolophus, 880. 



Rhinops, 282. 



Rhizocephala, 359. 



Rhizocrinus, 314. 



Rhizopoda, 14, 109, 131. 



Rhizostomae, 190, 205. 



Rhodeus, 630. 



Rhomboidal sinus, 746. 



Rhopalia, 185. 



Rhopalura, 165, 166. 



Rhopilema, 185. 



Rhynchobdcllida?, 280. 



Rhynchocephalia, 684. 



Rhynchocaelom, 233. 



Rhynchodus, 635. 



Rhynchota, 384, 406. 



Rhytina, 845, 846. 



Ribbon-worms, 231. 



Ribs of Vertebrates, 537. 



Rock-dove, 732. 



Rodent, lower jaw of, 866. 



Rodentia, 865. 



Rods and cones of eye, 552. 



Roe-deer, 852. 



Rorqual, 864. 



Rossia glaucopis, 164. 



Rostrum of crayfish, 325. 



Rotatoria = Rotifers, 11, 65, 244, 281. 



Rotifer, structure of a, 283. 



Rotulae, 303. 



Rudimentary = (vestigial) organs, 45. 



RudistaB, 482. 



Rumen, 851. 



Ruminants, 848. 



Rumination, 851. 



Sabella, 209. 

 Sabellaria, 268. 

 Sable, 873. 

 Saccocirrus, 270, 49S. 

 Sacculina, 347, 347, 348, 360. 



— development of, 347. 

 Sacculus of ear, 548. 



— rotundus, 802. 

 Sacrum, 780. 

 Sagitta, 280. 



— development of, 281. 

 Sakis, 885. 



Salamander, 5, 678, 680. 

 Salinella, 165, 166. 

 Saliva, 30. 



Salivary glands of ant-eaters, 844. 



of cockroach, 374. 



of Collocalia, 760. 



of Helix, 440. 



of Hirudo, 275. 



of Insects, 388, 391. 



of rabbit, 802. 



