376 
Racoon, 25, 334. 
Radiata, 54. 
Radiolaria, 17, 30, 53; general charac- 
ters of, 41. 
Raiide, 22, 
Rails, 293. 
Rallide, 28, 293. 
Rallus, 294. 
Rana, 28, 252. 
Ranide, 254. 
Raptores, 24, 290, 303, et seq. 
Rasores, 24, 289, 296. 
Rat, 25, 338. 
Rattlesnake, 23. 
Rays, 22, 228. 
Red Coral, 100. 
Red Deer, 328. 
Regnum Protisticum, 3. 
Reindeer, 25, 327. 
Reproduction, general features of, 57 ; 
in Hydroid Zoophytes, 68, ef seq. 
Reptilia, 23, 215, 225; general charac- 
ters of, 256, ef seg. ; jaw of. 257 ; teeth 
of, 258 ; circulation of, 26. ; respiration 
of, 259 ; orders of, 7b. . 
Respiratory tree of Holothurians, 116, 
Respiratory tubes of Rotifera, 126. 
Rhamphastide, 24, 300. 
Rhea, 24, 294. 295. 
Rhinoceros, 25, 328, 324. 
Rhinolophide, 25. 
Rhizocephala, 20. 
Rhizocrinus, 118, 114. 
Rhizopoda, 17, 28 ; general characters of, 
30; divisions of. i. 
Rhizostoma, 18, 87, 88. 
Rhizostomide, 18, 88. 
Rhytina, 18, 320. 
Ribbon-worms (see Nemertide). 
Rodentia, 25, 313; general characters 
of, 336, et seq. 
Roebuck, 328. 
Rorquals, 322. 
Rotifera, 19, 118 ; general characters of, 
123, et seq. 
Round-worms, 19, 124. 
Rugosa, 18, 92 ; characters of, 100. 
Ruminantia, 824, 325; dentition of, 825 ; 
stomach of, 326 ; families of, 327, 
Runners (Birds), 24, 289, 294. 
SABLE, 334, 
Sagitta, 19, 129. 
Salamandra, 23, 247. 
Salmonide, 22, 241. 
Sand-hopper, 20, 136. 
Sand-pipers, 294. 
Sand-star, 19. 
Sand-worm, 19. 
Sanguisuga, 19, 182. 
Sarcode, 27, 
Sarcoids of sponges, 43. 
Sarsia, $1. 
Sauropsida, 225, 226. 
Sauropterygia, 23, 260 ; general charac- 
ters, 274. 
Saururce, 24, 290, 304. 
INDEX. 
Saw-fish, 22, 
Saw-flies, 21, 173. 
Scallop, 21. 
Scalops, 341. 
Scansores, 24, 289, 298, e seq. 
Scincus, 270. 
Sciuride, 338. 
Sclerobasica (Zoantharia), 97. 
Sclerobasic corals, 94, 99. 
Sclerodermata (Zoantharia), 94. 
Sclerodermic corals, 94. 
Ree, 19, 108; general characters of, 
117. 
Scolopacidce, 24, 294. 
Scolopendra, 20, 156. 
Scomberidc, 22, 242. 
Scorpion, 149, 152, 153. 
Scratchers (Birds), 289, 2936. 
Scylliadc, 22. 
Sea-anemones, 93. 
Sea-blubbers, 18. 
Sea-centipedes, 19. 
Sea-cucumbers, 19, 115. 
Sea-eggs, 19. 
Sea-lemons, 2?. 
Seals, 25, 312, 331, 332, 333. 
Sea-mats, 21, 185. 
Sea-mosses, 183, 184. 
Sea-mouse, 19, 135. 
Sea-pens, 18. 
Sea-rods, 18, 97. 
Sea-slugs, 201. 
Sea-snakes, 23. 
Sea-spiders, 20, 151. 
Sea-squirts, 21, 188. 
Sea-unicorn, 322. 
Sea-urchins, 19. 
Sea-worms, 134. 
Segmental organs of Annelides, 131. 
Selachti, 245, 
Semnopitheci, 344. 
Sepiola, 205. 
Serpula, 19, 188, }384. 
Sertularia, 17. 
Sertularida, 17, 62, 66 ; general charac- 
ters of, 71 ; polypites of, 72 ; reproduc- 
tion of, 73. 
Sharks, 22, 245, 
Sheat-fish, 241. 
Sheep, 25, 828, 329. 
Shell of Foraminifera, 87; of Brachio- 
poda, 190; of Lamellibranchiata, 
195 ; of Gasteropoda, 200 ; of Hetero- 
poda, 203; of Pteropoda, ib; of the 
Argonaut, 209 ; of Pearly Nautilus,2@11. 
Shrew-mice, 25, 340, 341. 
Shrikes, 302. 
Shrimp, 20. 
Siluride, 241. 
Simia, 25, 844. 
ae aP here 17, 62 ; general characters 
of, 75. 
Siphonops, 248. 
Siphons (of Lamellibranchiata), 193.. 
Sipunculus, 19, 180. 
Stredon, 25, 249, 250, 
Siren, 23, 249, 250. 
