INDEX. 



827 



Cypris, 293. 



Cypeelidce, 629. 



Cyrtoceras, 434, 436. 



Cyrtolites, 416. 



Cysticerci, 230, 233, 234, 235. 



Cystic Worms, 230, 233, 234, 235. 



Cystiphyllidce, 175, 185. 



Cystiphyllum, 174, 175. 



Cystoidea, 192 ; general characters of, 216 ; 



distribution of, in time, 223. 

 Cythere, 293. 

 Cytherea, 397. 



Dacelo, 629. 



Dactylethra, 521. 



Dacti/localyx, 89, 90. 



Dactylopterus, 468. 



Dafila, 606. 



Dakosaurm, 558. 



Dama, 716. 



Daphnia, 293, 295. 



Darter, 605. 



Darwinian theory, 48. 



Dasornis, 598. 



Dasypodidce, 672, 675. 



Dasyprocta, 755. 



Dasyproctidce, 755. 



Dasypus, 676. 



Dasyurus, 67, 668. 



Dawsonella, 416. 



Death-adder, 542. 



Decapoda (Crustacea), 306; distribution of, 

 in time, 314 ; (Cephalopoda), 419, 427, 428. 



Decollated shells, 370. 



Deer, 713-716. 



Degeeria, 345, 346. 



Deinosauria (see Dinosauria). 



Deinotherium, 728, 732. 



Delphinidce, 689, 692. 



Delphinus, 689, 690. 



Demodex, 321, 322. 



Dendroccela, 240. 



Dendrogrdjrtus, 144, 150. 



Dendrohyrax, 728. 



Dendrolagus, 663. 



Dendrophyllia, 159. 



Dendrostyle, 142. 



Dental formula, 649, 650. 



Dentalidce, 412. 



Dentalium, 409. 



Dentirostres, 624, 626. 



Derrias, 779. 



Desman, 768. 



Desmognathce, 577. 



Development, 41 ; Retrograde, 43 ; of 

 Gregarinidce, 60 ; of Foramini/era, 69 ; 

 of Sponges, 91 ; of Hydra, 113 ; of Cor?/- 

 m'cZa, 118; of Calycophoridce, 133; of 

 Physophoridce, 135 ; of Medusidce, 130; 

 of Lucernarida, 139 ; of Actinidce, 156 ; 

 of Pleurobrachia, 178 ; of Echinoder- 

 mata, 191 ; of Echinoidea, 200 ; of .4ste- 

 roidea, 204 ; of Ophiuroidea, 206 ; of 

 Comatula, 215; ofHolothuroidea,219; of 

 Tceniada, 232 ; of Trematoda, 237, 238 ; 

 of Nemertida, 241 ; of Balanoglossus, 

 ib. ; of Acanthocephala, 243 ; of Tri- 

 china, 246 ; of the Guinea-worm, i&. ; 

 of Gephyrea, 256 ; of Hirudinea, 262 ; 

 of Tubicolar Annelides, 265 ; of Errant 

 Annelides, 269 ; of Crustacea, 277 ; of 

 Ichthyophthira, 284 ; of Rhizocephala, 



286; of Cirripedia, 288; of Ostracoda, 

 293 ; of Copepoda, 294 ; of Pliyllopoda, 

 296 ; of Limulus, 300 ; of Isopoda, 304, 

 305; ofAmphipoda, 304 ; ofStomapoda, 

 306; of Macrura, 307; of Anomura, 

 310; of Brachyura, 312 ; of^lrac/midrt, 

 319; ofMyriapoda,329; oflnsecta, 341 

 etseq.; of Polyzoa, 378; of Tunicata, 

 384 ; of Brachiopoda, 393 ; of Lamelli- 

 branchiata, 402 ; of Gasteropoda, 408 ; 

 of Amphibia, 509 et se<?. 



Dextral shells, 370. 



Diaphophorodon, 72. 



Dibranchiata (Cephalopoda), characters 

 of, 426 ; divisions of, 427-430 ; distribu- 

 tion of, in space, 435 ; in time, 437. 



Dicer atherium, 694, 695, 721. 



Diconodon, 699. 



Dicoryne, 115, 118. 



Dicotyles, 703, 707. 



Dicrocerus, 722. 



Dictyocysta, 95. 



Dictyotiema,, 150. 



Dicynodon, 563. 



Dicynodontia, 568. 



Dicystidea, 59. 



Didelphia, 655. 



Didelphidce, 659, 665, 666, 670. 



Didelphys, 666, 667. 



Dididce, 617. 



Didunculidce, 617. 



Didunculus, 617. 



Dirfws, 617, 618. 



Didymograptus, 150, 151. 



Difflugia, 65. 



Digitigrada, 736, 742. 



Dimorphodon, 565. 



Dimyaria, 402. 



Dinoceras, 723, 724, 725. 



Dinocerata, 723. 



Dinophis, 545. 



Dinornis, 599, 600. 



Dinornithidce, 599. 



Dinosauria, 565, 566, 567. 



Diomedea, 604. 



Diphasia, 122, 123. 



Diphycercal tail of Fishes, 469. 



Diphyes, 133, 134. 



Diphyozooids, 133. 



Diplacanthus, 505. 



Diplograptus, 146, 150. 



Diplophrys, 73. 



Dipnoi, general characters of, 500 ef 

 s7. ; distribution of, in time, 507. 



Dipodidce, 759, 760. 



Dipodomys, 757. 



Diprotodon, 670. 



Diprotodontia, 661. 



Diptera, 335, 340 ; mouth of, 337 ; char- 

 acters of, 354. 



Dipterus, 503, 507. 



Di^ws, 759. 



Discina, 389, 395. 



Discinidce, 394, 395. 



Discodermia, 90. 



Discophora (Leeches) see Hirudinea. 



Discorbina, 68, 70. 



Dissepiments of Corals, 161. 



Distal, 110. 



Distoma, 238. 



Distribution, geographical, 50 ; bathyme- 

 trical, 52 ; geological, 53. 



