INDEX 



Dareste, 721 



Darters, 659 



Dascyllus, 672 



Dasyatis sabina, 464 



Dasyscopeliis, 611 



Datnioides, 658 



Da wy doff, 16 n. 



Day, 569 n., 593 n. 



Deal- Fish, 715 



Delhez, 551 



Deltodus, 445 



Deltoptychius, 445 



Demersal, 408 



Dendrodoa, 7<i 



Dentex, 664 



Dentition, 247 f. ; dentinal tissues, 249 ; 

 fixation of teeth, 249 ; succession and 

 replacement, 250 ; shape, 251 ; sexual 

 differences, 251 ; pharyngeal teeth, 251 ; 

 Cyclostomata, 247 ; Petromyzoii, 248 ; 

 Fishes, 248 f. ; ScyUium, 249 ; Car- 

 charias, 250 



Dercetidae, 623, 622 



Dercetis, 623 



Derepodichthys, 712 



Derichthys, 601 



Dermal denticles, 183 f. ; "structure and 

 development, 183, 184, 185 



Diagramma, 664 



Dibranchus, 720 . 



Uicerobatis, 463 



Dicrotus, 679 



Didemuidae, 86, 82, 110 



Didemnum, 87 



Didymaspis, 530 



Dinichthys, 537, 149 



Dinolestes, 659 



Dinoperca, 659 



Diodon, 726, 163, 354, 361 ; scales, 191 ; 

 teeth, 251 ; D. geometricus, 726 ; I), 

 hystrix, 364 



Diodontidae, 726, 722 



Diphy cereal, 159 



Diplacanthidae, 441 



Diplacantkopoma, 712, 713 



Diplacanthus, 441 



Diplesium, 659 



Diplocrepis, 709 



Diplomystes, 588, 587 



Diplomystus, 563 



Diplophos, 571 



Diplophysa, 582 



Diplopterus, 477 



Diplosoma, 87 ; section, 87 



Diplosomatidae, 87, 110 



Diplosomoides lacazii, larva, 78 



Diplospondylic, 198 



Diplurus, 4S1, 161 



Dipneusti see Dipnoi 



Dipnoi (Dipneusti), 505 f., 149 ; distribu- 

 tion, 512 



Dipterodon, 665 



506, 519 ; D. 



506 



l)!l>l>/chus, 582 

 Disartete. 636 n. 

 Discocephali, 691 L, 651, 652 

 Discognathus, 582 

 Discopyye, 464 



Distaplia. 85 ; 1). //*"//////"//, larva, 78 

 Distichodontinae, 576' 

 iJistichodus, 576 ; I), niloticus, mouth, 



577 



Distoma, 85 

 Distomatidae, 85, 81, 82, 83, 86, 110; 



reproductive organs, 56 ; ascidioxooid, 



82 ; transverse section, 86 

 Ditrema, 670 ; 1>. temmincLii, 670 

 Dog-Fishes, 446 



Dolchinia, 96, 100 ; D. mirabilim, 100 

 Dolichoglossus, 17, 5, 13 ; D. kowalevskii, 



6, 7, 9, 20 ; 1). otagoensis, 11 

 Dolichorhynchus, 1-17 ; I), i adieus, 137 

 Doliolidae, 96, 39, 110 

 Doliolum, 96, 37 ; structure, 96 ; life- 

 history, 97, 98 ; occurrence, 99 ; biid- 



ding, 97 ; polymorphism, 98 ; D. 



nationalis, 99 ; D. tritonis, 96, 99 

 Dollo, 518 

 Dolopichthys, 719 

 Dolphins, 681 

 Doradinae, 588 

 Dorado, 578 

 Doras, 5SS, 590, 592, 363 ; intestinal 



respiration, 292 ; stridulation, 357 ; 



elastic-spring-apparatns, 359 ; 1). wacu- 



latus, air-bladder, 303 ; nature of 



sounds, 362 



Dorsal lamina, 45, 47, 52, 101, 105 

 Dorsal pore, 18, 19, 31 

 Dorsal tubercle, 52, 79 

 Doryichthys, 634, 635 

 Uoumea, 5S8 

 Doydixodon, 664 

 Draconetta, 706 

 Dragonet, 707 

 Drasche, 38 



Drepanaspidae, 525, 530 

 Drepanaspis gemtindenensis, 526, 530, 



525, 526 

 Drepane* 668 

 Drepanidae, 668, 654 

 Drum, 663. 304, 362 

 Ductor, 677 

 Dufosse, 355 

 Dussumieria, 563, 563 

 Dybowski, 697 n. 

 Dysichthys, 596 

 Dysomma, 603 

 Dysommatopsis, 603 



Eagle Rays, 465 



Echeneididae, 691 



Echeneis, 691 ; cephalic sucker, 1 fil 



