INDEX 



80 1 



Circulation (cont.) 



Ciona, 62. 



dipnoi, 277. 



earliest chordates, 766. 



elasmobranchs, 159. 



Lampetra, 91. 



monotremes, 554. 



reptiles, 378, 420. 



seals, 692. 



tunicates, 62. 



whales, 670. 

 Citellus, 657. 

 Civet, 689. 



Cladoselache, 176, 178. 

 Clarias, 261. 



Classification, see Evolution, syste- 

 matic. 

 Clavelina, 67. 

 Cleavage, actinopterygii, 204, 236. 



amphioxus, 42. 



Balanoglossas, 55. 



elasmobranchs, 180, 184. 



radial, 48. 



spiral, 48. 

 Cleithrolepis, 233. 

 Climatic change, actinopterygii, 238. 



cretaceous, 570. 



evolution, 13. 

 Climatius, 186. 

 Climbing perch, 261. 

 Cline, 523. 

 Cling-fish, 251. 

 Clitoris, see Fertilization. 

 Cloaca, bird, 469. 



insectivores, 582. 



Lampetra, 96. 



marsupials, 560. 



monotremes, 554. 

 Club-shaped gland, 44. 

 Clupea, 237, 251. 

 Cobra, 415. 

 Coccosteus, 186. 

 Cod, food of, 257, 286. 



reproduction, 265, 283. 

 Coelacanthini, 271. 

 Coelolepida, 81, 129. 

 Coelom, amphioxus, 26, 31, 42. 



Balanoglossus, 51. 



birds, 473. 



Cephalodiscus, 58. 



development, 42, 45, 48. 



elasmobranchs, 148, 161. 



Lampetra, 93. 



mammals, 554. 



reptiles, 420. 



segmentation, 45, 148. 



tunicates, 63. 

 Collocalia, 489. 

 Colobus, 624. 



Colour, actinopterygii, 255. 



amphibia, 299. 



birds, 436. 



birds' eggs, 477, 507. 



cryptic, 256, 437. 



dymantic, 302. 



elasmobranchs, 142. 



lampreys, 84. 



mammals, 604, 618. 



primates, 604, 624. 



reptiles, 373, 410. 



sematic, 258, 437. 



tunicates, 61. 



ungulates, 696. 

 Colour change, actinopterygii, 258, 

 410. 



amphibia, 300. 



elasmobranchs, 142, 164. 



Lampetra, 105. 



reptiles, 373, 410. 



tunicates, 61. 

 Colour vision, birds, 487. 



fishes, 212, 255. 



primates, 604, 618. 

 Colubridae, 413. 

 Colugo, 592. 



Columba, 439, 456, 468, 495, 519. 

 Colymbiformes, 516. 

 Communication, amphibia, 334. 



birds, 472, 492. 



carnivores, 681. 



fishes, 218. 



horses, 735. 



primates, 621, 624, 630, 633, 648. 



seals, 692. 



ungulates, 697. 



whales, 672. 

 Compsognathus, 422. 

 Conditioning, see Learning. 

 Conduction velocity, 98. 

 Condylartha, 700. 

 Coney, 707. 

 Congiopodus, 218. 

 Continental drift, 13. 

 Continents, level of, II. 

 Convergent evolution, 777. 

 Coot, 518. 

 Coraciiformes, 520. 

 Coral fishes, 233, 241, 252. 

 Cormorant, 517. 

 Corn-crake, 518. 

 Corpuscles, see Blood. 

 Corvus, 477. 

 Coryphodon, 718. 

 Cosmine, 229, 269. 

 Cottus, 218. 

 Cotylosauria, 389. 

 Courtship, actinopterygii, 267. 



amphibia, 342. 



3F 



