Index 



Dicti/ocysta tiara Haeckel, on the 

 Probable Origin of, 63 ; figure of, 

 64. 



Didemnum, synoptic description, 444; 

 great number of species in, 472 ; 

 need of critical study of species, 

 472. 

 caruulentum, superficial character- 

 istics, 470; zooids, 471; branchial, 

 digestive, and reproductive, sys- 

 tems, 471; breeding season, 471; 

 habitat and distribution, 471 ; 

 type locality, 471; figures of, opp. 

 496, 506. 

 var. lacteolum, superficial character- 

 istics, 471 ; habitat and distribu- 

 tion, 472 ; figures of, opp. 498, 

 506. 



Didesmis ovalis, 96. 

 quadrata, 96. 



Diemyetylus torosus, cultivation of 

 tissues from, 56. 



Dinopliysis, food for copepods, 178. 



Diplodiniuni uncinatum, 103. 

 unifasciculatum, 103. 



Diplosoma, synoptic description, 444. 

 caulleryi, figure of, opp. 498. 

 listeri, 475. 



pizoni, superficial characteristics, 

 474; zooids, 474; branchial, diges- 

 tive, and reproductive, systems, 

 475 ; habitat and distribution, 

 475 ; asexual reproduction, 475 ; 

 diplosomic larva, 475 ; stages of 

 bud development, 476; figure of, 

 opp. 504. 



Diplosomoides, synoptic description, 

 445. 



caulleryi, superficial characteristics, 

 476 ; zooids, 477 ; branchial, diges- 

 tive, and reproductive, systems, 

 477; budding, 477; habitat and 

 distribution, 477. 



Discorbina globularis, reproduction, 

 191. 



Distaplia (Holozoa), synoptic descrip- 

 tion, 444. 



Distaplia occidentalis, superficial, 

 characteristics, 464 ; zooids, 465 ; 

 branchial, digestive, and repro- 

 ductive, systems, 465 ; habitat and 

 distribution, 465 ; type locality, 

 465 ; variation of color, 466 ; em- 

 bryogenesis, 466 ; escape of lar- 

 vae, 466 ; migration of ovum, 467 ; 

 incubatory pouch, 467. 

 pizoni, figures of, opp. 508. 



Distribution, plant and animal, com- 

 parison of systems, 327-329, 332- 

 340 : groupings of associations, 

 major and minor, 329, by forma- 

 tions, 329 ; zoogeographical, 332, 

 340; life-zone, 333-339, 340, 341; 

 temperature and humidity, fac- 

 tors in, 335, 336, 340 ; ecological, 



327-329, 339-340, 341. See also 

 Life-zones. 



Distribution of the Land Vertebrates 

 of Southeastern Washington 

 293. 



Doflein, F., criticism of order Binu 

 cleata, 227. 



Drasche, B. von, cited on Didemnidae 

 477. 



Echineis remora, 165. 



Ecologic distribution. See Distribu 

 tion. 



Emerita analoga, characteristics, 431 

 concealing reaction, 432 ; death 

 feint reaction, 434 ; photo-taxis 

 in, 435 ; geotaxis in, 435, 437 

 labyrinth experiments on habit 

 formation, 43.5-436; range of 

 stimuli, 436, 437, of habitat, 437 



Emerita analoga (Stimpson), Notes 

 on the Natural History and Be 

 havior of, 4:il. 



Entodinium valvatum, 103. 



Epiphragmophora petricola, descrip 

 tion, 107, 108; tvpe and type lo 

 calitT, 108; remarks, 108.' 

 traski,"l08. 

 tudiculata, 109. 



rufiterrae, 109; description, 109; 

 type and type locality, 109; re- 

 marks, 109. 

 subdolus, 110. 



Essenberg, C, 401. 



Esterly, C. O., 171, 381, 393. 



Eucalanus, methods of food-getting, 

 175; figures of mouth region, 173, 

 of head, 174; intestinal contents, 

 180. 

 elongatus, 179. 



Eudistoma, 444. 



Eudistoma diaphanes, superficial 

 characteristics, 469; zooids, 469; 

 branchial, digestive, and repro- 

 ductive, systems, 469 ; habitat and 

 distribution, 469, 470; type local- 

 ity, 469; co-incident distribution, 

 470. 

 psammion, superficial character- 

 istics, 467 ; zooids, 468 ; branchial, 

 digestive, and reproductive, sys- 

 tems, 468 ; breeding season, 469 ; 

 habitat and distribution, 469, 

 470 ; type locality, 469 ; figures 

 of, opp. 506. 



Euherdmania, 445. 

 claviformis, 490. 



Feeding Habits, and Food of Pelagic 

 Copepods and the Question of 

 Nutrition by Organic Substances 

 in Solution in the Water, 171. 



Fission, in Xaegleria gruberi, liinary, 

 247 ; prophase, 247 ; metaphase, 

 247; anaphase, 248; telophase, 

 248; nuclear reorganization, 248; 

 cytoplasmic division, 249; be- 



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