548 



INDEX 



Centra, of birds, 464; of mammals, 



493 ; of vertebrae, 333. 

 Cephalodiscus, 311, 313. 

 Cephalopoda, 296. 

 Cephalothorax of arachnida, 254. 

 Ceratium, 40. 

 Ceratodus fosteri, 405. 

 Cercaria, 134; of fluke-worm, 134. 

 Cercopithecidae, 543. 

 Cere, 459, 486 ; absence of, 486. 

 Cerebellum, 354; of birds, 479, 489; 



of mammals, 517. 

 Cerebral hemispheres, 355, 480, 514, 



Cervical vertebrae, 335. 

 Cestoda, 138. 

 Cestus, 128. 

 Cetacea, 526, 535. 

 Chaetopoda, 188. 

 Chalaza, 490. 

 Chalk, how formed, 26. 

 Chameleon, American, 328. 

 Chauna, 486. 



Chela, of arachnida, 256; of Crusta- 

 cea, 218, 219. 

 Cheliceres, 257, 262. 

 Cheliped, 218. 

 Chelonia, 434, 438, 455. 

 Chiasma, optic, 380. 

 Chilaria of Limulus, 262. 

 Chilopoda, 240. 

 Chiroptera, 526, 542. 

 Chitin, 20. 

 Chitonellus, 281. 

 Chiton spinosus, 281. 

 Chlamydosaurus, 452. 

 Chlamydoselachus, 389. 

 Chlorophyll, 28. 

 Choanoflagellata, 38. 

 Chorda dorsalis, 310. 

 Chordata, 310. 

 Chromatophores, 303, 304. 

 Chrysalis, 252. 

 Chyle, 346. 

 Ciliata, 49. 



Circulation of frog, 423. 

 Cirri of amphioxus, 323. 



Cirrus, of annelid worms, 191; of cri- 

 noids, 175; of fluke-worms, 130. 



Cistudo lutaria, 442. 



Clam, 279; giant, 280. 



Claspers, of sharks, 368. 



Classification, 5, 8. 



Clathrulina elegans, 28, 29. 



Clavicle, 414, 501. 



Clavicles, of sturgeon, 400. 



Claws, 486 ; of birds, 460, 486. 



Cliona, 89. 



Clitellum, 201. 



Clitoris, 521. 



Cloaca, 344, 407, 476 ; of Prototheria, 

 523; of sharks, 393. 



Cnidoblast, 95. 



Cnidocil, 95. 



Cobego, 541. 



Coccidium, 58. 



Cochlea, of birds, 489 ; of mammals, 

 518- 



Cockle shell, 280. 



Cockroach, 242, 243, 247. 



Cocoon, of earthworms, 201. 



Codonella, 49. 



Coeca, of fluke-worms, 131 ; hepatic, 

 of Amphioxus, 326; hepatic, of 

 Balanoglossus, 313; hepatic, of in- 

 sects, 248; intestinal, of starfish, 

 165 ; pyloric, of starfish, 163 ; rec- 

 tal, of birds, 476; worms, 193. 



Coecilia, 433. 



Ccelenterata, 90. 



Coelom, of mammals, 504; of mol- 

 luscs, 271 ; of starfish, 160 ; of 

 worms, 191. 



Coenenchyma, 121. 



Ccenosarc, 94. 



Collar, 39. 



Collozoum inerme, 33. 



Colocalanus, 234. 



Colonies, 42. 



Colony, 30. 



Colors of birds, 484. 



Columba livia, 457. 



Columella, 285 ; of birds, 468 ; of 

 corals, 121. 



