928 



INDEX 



Cimex lectularlus. 318 

 Cimicidae, family, 318 

 Cinclides, 142 



Circulatory or vascular system, 110 

 Circulatory system, cat. 648 

 chicken, 604 

 open type, 2 63. 273 

 phrynosoma, 566 

 pisces. 459 

 toad. 542 

 turtle. 580 

 Circumesophageal commissures. 274 

 Circumoral canal. 221. 231 

 Circumpliaryngeal connectives. 208 



ring. 176 

 Cirri, 197. 224 

 Cirripathes, 143 

 Cirripedia. 284 



order, 265 

 Cirrus. 179 



Clam, circulation, 252 

 digestive system, 250 

 excretion. 253 

 fresh water, 248 



nervous system and sense organs. 252 

 reproduction. 253 

 respiration. 251 

 Class Infusoria. 93 



Sarcodina. 85 

 Classification of man. 22 

 Clavicles. 609 

 Cleavage, 280, 374, 802 

 in asterias, 116 

 in cat. 653 

 disymmetrical. 804 

 divisions, 374 

 earthworm. 211 

 in frog, 533 

 holoblastic. 802 

 in mammal, 816. 814 

 merotalastic. 802 

 spiral, 804 

 superficial. 803 

 Cleft palate, 656 

 Click beetles. 324 

 Cliona. 121 



Climax community, 728 

 ClUeUuiii. 199, 200. 209. 214 

 Clitoris of cat. 653 

 Cloaca, 613 

 Clonorchis. 161. 759 



sinensis, Chinese liver fluke. 745. 757 

 Clupea harengus, 448 

 Clupeidae. family. 448 

 Clypeaster. 222 

 Clypeus, 345. 357 

 Cnemidophorus. 554 

 Cnidoblast. 148. 149. 150 

 Cnidocil. 148, 149 

 Cnidosporidia, 73 

 Cobras, 558 

 Coccidia, 73 



Coccinellidae, family, 324 

 Coccygeal vertebrae. 609 

 Coccyx. 878 

 Cochineal. 341 

 Cochiopa texana. 247 

 Cochlea. 403. 60S. 650 

 Cockroaches. 313 

 Cocoon. 171. 214 

 earthworm. 209 

 Codfishes. 451 

 Cod-liver oil. 456 

 Codonosiga, 60, 75 

 Coelenterata, classification. 131 

 economic relations of. 156 

 phylum. 26. 130 

 Coelenterates, phylogenetic advances of, 

 1.56 



Coeliac axis. 606 

 Coeliacomesenteric artery. 506 

 Coeloblastula. 807 

 Coelom. 194. 211 



development, 536 

 Coitus. 409. 814 

 Colaptes auratus, 594 

 Coleoptera. order. 265. 322 

 Coleps, 70 

 Collar cells, 119 

 Collared lizard, 553 

 Collembola, order, 265. 311 

 Colloid. 53 

 Colloidal state. 53 

 CoUum. 288 

 Colotaoma. 665 

 Colony formation. 864 

 Color blind inheritance, 833 

 Coloration in amphibia. 474 

 Colubridae. 557 

 Columbiformes. order. 591 

 Columella, 574, 608 

 Colymbiformes, order, 586 

 Comb jellies, 157 

 Commensalism. 735 

 Commissure. 199 

 Conditioned reflex. 852 

 Conductivity. 54 

 Condvlarthra. 874 



Condylura cristata, star-nosed mole. 619 

 Conger eels. 449. 473 

 Congridae. family. 449 

 Coniferous forest formation. 725 

 Conjugation. 96. 98 

 Couocephalus vicinus, 310 

 Consciousness. 54 

 Conservation of wildlife. 784 

 Continuity of germ plasm. 48 

 Contractile vacuole. 88, 94 

 Contractility. 54. 381 

 Conus arteriosus. 490. 510 



Coon. 629 



Cooties, 206 



Coots. 591 



Cope, E. D.. 48 



Copepod. 284 



Copepoda. order, 265 



Copperheads, 556. 559 



Copulation, 613. 6.i3. 814 

 earthworm. 209 



Copulatory bursa, 179 



Coraciiformes, order. 594 



Coracoid bar. 430 

 bone, 465. 495. 521. 609 



Coral, 140. 143 

 snake. 558 



Corallium rubrum. 143 



Coregonidae, family, 448 



Coreidae, family, 318 



Corizldae, family. 318 



Cormorants. 587 



Coin-ear worm. 320 



Cornea. 270. 301. 401. 528. 607 



Corneageu cells, 276, 277 



Corona radiata, 812 



Corporin, 076 



Corpus albicans, 813 

 luteum, 812 



Corrodentia. order. 266. 333 



Corti. organ of. 6.50 



Cortin. 671 



Corythucha distincta. 318 



Cosmic rays, 700 



Cotton boll weevil. 324 



Cotvlophoron. 702 



Cougar, 629 



Cow. 630 



Cowper's glands. 653 



