INDEX 



711 



Demodex, 381. 



Demos pongics, 105. 



Dendroccelum, 151, 156. 



Dendroctonus, 364. 



Dendronotus, 261. 



Dcnisonia, 539. 



Dcntalium, 261. 



Dentary, 494. 



Denticeti, 645, 674. 



Dentine, 635, 678. 



Dentition, acrodont, 553 ; heterodont, 



679 ; homodont, 679. 

 Dermal branchiae, 192 ; denticles, 424 ; 



papillae, 677 ; plates, 677. 

 Dcrmanyssus, 380. 

 Dermatemydidce, 535, 540; Dermatemys, 



535- 



Dcrmcstidcz, 361. 

 Dermis, 402, 403, 479. 

 Dermochelyidce, 535, 544. 

 Dermophis, 510. 

 Dermoptera, 642. 

 Dero, 236. 



Desmognathus, 511, 517. 

 Development, Asterias, 197; Aurelia, 



131, 132; echinoderms, 210-211; 



crayfish, 288; frog, 506-510; Gonione- 



mus, 124; liver fluke, 159; lamprey, 



419 ; mammals, 680-682 ; perch, 441 ; 



Planar ia, 154. 

 Devonian period, 697. 

 Diapheromera, 344. 



Diaphragm, honeybee, 320; rabbit, 637. 

 Diaptomus, 294. 

 Diastylis, 294, 296. 

 Dibranchia, 268. 

 Dicotyles, 644. 



Dicycma, 176; Dicyemidce, 176, 177. 

 Didclphia, 632, 642; Didelphiidce, 647; 



Didelphis, 642, 647. 

 Didinium, 54. 

 Diemyctylus, 511, 515. 

 Difflugia, 39. 

 Digenea, 161. 

 Digestion, Ameba, 30; coelenterates, 143; 



Grantia, 96; Hydra, 113; Paramecium, 



55- 

 Digestive system, 77; Amphioxus, 396, 



397; crayfish, 282; Ctenophora, 146, 



147; dogfish, 425; earthworm, 220; 



frog, 480; honeybee, 318; lamprey, 



416,417; leech, 238; liver fluke, 157, 



158; perch, 437; Peripatus, 307; 

 pigeon, 583 ; Planaria, 152 ; snail, 

 253; spider, 373, 374; squid, 265, 

 266; starfish, 194; turtle, 530; ver- 

 tebrates, 405. 



Digit, 576, 581, 582. 



Digitigrade, 653. 



Dik-dik, 669. 



Dimorphism, 126, 621. 



Dinoflagellata, 47, 48. 



Dinar nis, 589; Dinornithiformes, 589, 

 5Q7- 



Dinosauria, 573. 



Diodont 466 ; Diodontida, 466. 



Dioecious, 80. 



Diomedea, 590, 600. 



Diphy cereal, 447. 



Diploblastic, 89. 



Diplocardia, 215, 236. 



Diplodiscus, 162. 



Diplopoda, 309-310. 



Z)i>o, 432, 445, 471-472, 474, 694, 695. 



Dipper, 591. 



Diprotodontia, 642. 



Diptera, 337, 356-359- 



Dipylidium, 166. 



Discoglossidce, 512, 522; Discoglossus, 

 512. 



Discomedusce, 130, 133. 



Discorbina, 41. 



Dispsadomorphina, 539, 564. 



Dissimilation, 31. 



Dissosteira, 345. 



Distalia, 404. 



Distira, 539. 



Distomum, 162. 



Distribution of animals, 6-7. 



Dog, 643, 653, 684. 



Dogfish-shark, 422-428. 



Dolichoglossus, 387. 



Dolichonyx, 615. 



Dolphin, 645, 674. 



Domesticated, birds, 630-631 ; mammals, 

 684-685. 



Donkey, 671. 



Doris, 258. 



Dorsal, pores, 217; vessel, 318, 319. 



Dotterel, 607. 



Dove, mourning, 609. 



Dowitcher, 607. 



Down, 577, 578. 

 537, 553- 



