570 



INDEX 



Chromosomes, 137, 439; as carriers of 

 genes, 139, 474. 



Chrysalis, 381. 



Chrysemys, 422. 



Cicada, 374, 388. 



CiHa, 55, 141, 155, 176, 177. 



Ciliata, 175, 189. 



Ciliated columnar epithelium, 141. 



Circulatory system of crayfish, 331; 

 of earthworm, 290, 293; of fishes, 

 60; of frog, 56, 57, 90; of locust, 

 356; of mammals, 60. 



Cirphis unipuncta, 382. 



Cirratulus, 314. 



Cirripedia, 336. 



Cirrus, 312, 313. 



Cladocera, 334, 336. 



Clam, see MoUusca. 



Clam-worm, see Nereis. 



Classification, 5, 237, 506; natural, 

 239, 507. 



Clava, 277. 



Cleavage, in Amphioxus, 398; in 

 fowl, 427, 428; in frog, 404, 406. 



Cleavage cavity, see Blastocoele. 



Clinostomum, 22. 



CUteUum, 283. 



Cloaca, 47, 52. 



Cnidoblasts, 250, 252, 253, 257. 



Cnidocil, 253. 



Cockroach, 346, 373. 



Cocoon, 308, 381. 



Codonosiga, 196. 



Coecilia, 14. 



Coelenterata, 246, 247; body plan of, 

 281; classification of, 237, 240, 

 241, 274; sensory-neuromuscular 

 system of, 317. 



Coelome, of Amphioxus, 398; in clas- 

 sification, 239, 282; of earthworm, 

 289, 291, 300; of frog, 47, 416; in 

 organization, 246. 



Coelomic fluid, 291, 300. 



CcElomocoela, 239, 240, 245, 282. 



Coelomocoelous-triploblastic organi- 

 zation, 246, 308. 



Coleoptera, 375, 383, 551. 



Coleps, 189. 



Collembola, 372. 



Colloidal system, 71. 



Colonial Coelenterata, see Hydroids 

 and Corals. 



Colonial Mastigophora, 197, 201, 215. 



Colonial Protozoa, see Protozoa. 



Color sense, in insects, 364. 



Colpoda, 189. 



Columnar epithelium, 140. 



Commensalism, 259. 



Commissures, 298. 



Common path, principle of, 114. 



Comparative Anatomy, 499. 



Comparative Embryology, 503. 



Conjugation, 164, 173, 184, 186, 214; 

 significance of, 188. 



Connective tissue, 143; see also 

 Sustentative tissue. 



Connectives, circum-esophageal, 358; 

 circum-pharyngeal, 297. 



Consciousness, 121. 



Contractile tissue, 140, 146, 147; 

 cardiac muscle, 146; non-striated 

 muscle, 146; striated muscle, 147. 



Contractile vacuole, 156, 166, 178. 



Coordination, 128; chemical, 106; 

 nervous, 106, 117. 



Copepoda, 336. 



Copulatory organs, 39, 347. 



Corals, 237, 279, 280: see also 

 Actinozoa. 



Cosmozoic Theory, 490. 



Crabs, see Malacostraca. 



Crampton, 564. 



Cranial nerves, see Nerves. 



Craniata, 37. 



Crayfish, appendages of, 325; de- 

 velopment of, 333; external 

 features of, 322, 323; general 

 activities of, 328; internal organi- 

 zation of, 330; occurrence and 

 distribution of, 321; sections of, 

 324, 331. 



Cretinism, 100. 



Cricket frog, 16. 



Crickets, 377; see also GryUus. 



Crinoidea, 241. 



Crop, 290, 292, 354. 



