INDEX. 



55' 



Crocodile, 97 ; stomach, 163 ; ver- 

 tebra, 315; skull, 340; scales, 

 355 



Crotalus ; skull, 338. 



Crustacea"; organisation, 65 ; 

 gnathites, 128 ; respiration, 223 ; 

 branchial formula, 224 ; nitro- 

 genous waste, 253; skeleton, 

 298 ; locomotor organs, 376 ; 

 gonads, 499 ; larvse, 534 



Cryptocarpa, 40 



(Jryptoniscidse ; gonads, 500 



Ctenophora, 45; cilia, tentacles, 

 373; gastric cavity, 113 



Cucunmria, 64 ; lungs, 229 



Cyamus, 72 



Cyclodus, 96 ; scales, 366 



Cyclops ; zoological position, 68 ; 

 figure, 68 ; gnathites, 179 



Cyclostomata, 88 ; mouth, 140 ; 

 gills, 223 ; kidney, 258 ; skeleton, 

 314, 328 ; gonads, 506 



Cyrnbulia, 82 



Cymothoa ; hermaphroditism, 500 



Cyprcea, 82 



Cytozoa, 24 



Demodex, 180 



Dendroccelum, 49 



Dentalium ; figure, 82 



Desmodus; stomach, 167 



Didelphia, 99 



Diodon, 92 ; exoskeleton, 385 



Diphyes, 41 



Dipnoi, 90 ; heart, 195 ; pulmo- 

 nary vessels, 203 ; lungs, i35 



Diptera, 77 ; guathites, 132 ; sto- 

 mach, 134 ; imaginal disks, 

 533 



Distomum, 49; digestion, 114; 

 gonads, 486 



Dog ; tongue, 157 ; salivary glands, 

 160 



Dogfish ; teeth, 141 ; fins, 360 



Dolium, 82 ; salivary glands, 137 



Dolphin ; f ore-limb, 354 



Doris, 81 



Draco, 96 : flying organs, 383 



Dytiscus ; eye, 450 



Earthworm ; digestion in, 115 ; 

 typhlosole, 117; blood, 183; 

 spermatozoa, 479 ; gouads, 490 



Echidna, 98 ; teats, 522 



Echinanthus, 63 



Echinodennata, 58 ; digestion in, 

 120 ; respiration, 218, 229 ; renal 

 waste, 248 ; skeleton, 288 ; pedi- 

 cellariae, 297, 374; movements, 



374 ; nervous system, 400, 407 ; 



sensory organs, 434, 435, 444, 461 ; 



gonads, 491 ; development, 535 

 Echinoidea ; organisation, 63 ; 



skeleton, 289 ; sphaeridia, 435 

 Echinometra, 63 

 Echinorhynchus ; figure 50 

 Echinozoa, 63 

 Echinus ; zoological position, 63 ; 



test, 290 ; nervous system, 408 ; 



gonads, 491 

 Edentata, 99 

 Elasmobranchs, 90 ; heart, 195 ; 



labial cartilages, 335; brain, 



420 ; taste-organs, 436 : gonads, 



506 ; placenta, 514 

 Elephant ; molars, 154 ; skull, 343 

 Entoconcha, 180 

 tntomostraca ; parasitic, 179 ; 



blood - vessels, 188 ; skeleton, 



298 



Ephemeridse ; gnathites, 133 

 Ericulus; kidneys, 264 

 Euplectella ; zoological position, 



36; skeleton, 279 

 Eurystomata, 96 

 Euspongia ; zoological position, 



36 



Eutheria, 99. See Mammalia 

 Euthyneura, 81 

 Exocoetus, 93 ; figure, 382 



Fierasfer, 181 



Filaria, 51 



Firuloides, 82 



Fishes ; teeth, 142 ; spiral valve, 

 168 ; heart, 201 ; circulus cepha- 

 licus, 205; gills, hair-bladder, 

 232; operculum, 233; kidneys, 

 258; poison glands, 266; eye- 

 like spots, 269; vertebrae, 314; 

 skeleton, 323; fins, 359; bran- 

 chial bars, 328; mouth, 336; 

 sounds, 392 ; brain, 420 ; spinal 

 cord, 430 ; sensory organs, 436, 

 440, 453, 466; eye-like organs, 

 458 ; gonads, 506 ; oviducts, 513 ; 

 copulation, 519 ; care of young, 

 524 



Fbgellata, 30 



Fluke ; digestion, 178 ; nephridia, 

 248 ; gonads, 406 



Fowl ; pelvis, 351 



Frog, 93; heart, 197; carotid 

 gland, 203 ; vertebras, 315 ; skull, 

 330; brain, 419; gonads, 506 



Galago ; tongue, 157 

 Galeopithecus ; flight, 385 



