568 



INDEX 



Dcndrolagus, 424, 426 

 Dendrolimus pini, 543 

 Density, of life, pelagic, 239 



of oceanic waters, 150 



of populations, 242 

 Dentalium entalis, 278 

 Depositing shores, 180 

 Depositing shore faunae, 191 

 Dennochelys coriacea, 479 

 Descending currents, 174 

 Desert animals, pale coloration of, 467 

 Desert communities, 465 

 Desert toads, 48 

 Deserts as barriers, 63 

 Detritus feeders, 328 



abyssal, 254 

 Diaphanosoma, 336 

 Diaptomus, 131, 335 

 D. bacillifer, 365 

 D. denticornis, 365 

 D. gracilis, 338, 349 

 D. graciloides, 349 

 D. laciniatus, 350, 362, 364, 365 

 D. minutus, 362 

 D. salinus, 372 

 Diatomaceous ooze, 250 

 Diastylis, 80 



Dicrostonyx hudsonius, 511, 513 

 D. torquatus, 511, 513 

 Dicyrtoma, 530 

 Diduncidus, 128, 524 

 Diener, 110, 119 33 

 Dieng plateau, death valley on, 18 

 Difflugia, 374 

 D. mam miliar is, 364 

 Dina absoloni, 528, 531, 533 

 Diodon, 220 

 D. hystrix, 219 

 Diphyes arctica, 277 

 Diplosoma, 246 

 Dipodomys, 450 

 Diptera, arctic, 508 

 Dipus, 414, 467 



Direct stratification in lakes, 322 

 Discina atlantica, 59 

 Discognathus, 354 

 Disease-producing organisms, 555 

 Dismal Swamp, 291 



Dispersal, age of highways, 123 



by flying animals, 70 



by rafting, 69 



means of, for marine animals, 57 

 Distant, 468 49 ' «*■ 67 

 Diving birds, 473 

 Dobson, 526 30 

 Dodds, 316, 319 21 

 Doderlein, 54 1 , 55 38 , 96 9 > ll - »■ 30 ' »■ 33 , 



119 14 , 269 28 , 419 50 , 441 10 

 Doflein, 134«, 145 5 , 269 1S , 319 25 , 358 9 \ 



442 37 , 468 36 , 514 1 

 Dogger Bank, 98 



temperature barrier, 158 

 Dohrn, 222 27 

 Dombrowski, 441 20 

 Donax, 185 

 Doras, 354 



Dorcadion fuliginator, 92 

 Doris verrucosa, 190 

 Dorylus, 402 

 Draco, 426 

 Dragonflies, 402 

 Drechsel, 175 20 , 287 52 

 Dredging, effect on aquatic life, 549 

 Dreissena, 41, 60, 337 

 D. polymorpha, 40, 83, 297 

 Drepanididae, 88, 101 

 Driftwood, dispersal by, 68 

 Drimostoma, 113 

 Dromia, 200 

 Dromica, 64 

 Droste, 489 16 

 Drought resistance, 353 

 Droughts, effect on animals, 444 

 Drying, prevention of, 43 

 Diinigen, 418 19 

 Duncker, 96 29 

 Dunn, 75, 95, 319 16 

 Dwarfing of marine animals, 166 

 Dybowscella, 346, 347 

 Dynastes hercules, 50 

 Dysphotic stratum, 162 

 Dytiscus marginalis, means of dispersal 

 for Ancylus, 62 



Earthworms, faunal relations, 117 

 Eburnella, 88 

 Echeneis, 60 

 Echidna, 94, 383, 389 



