INDEX. 



791 



138 

 319 



643 

 647 



183 



289 

 472 

 647 

 206 



589 

 330 

 152 



493 

 429 



122 

 407 

 421 



Development of 



Hydra, . 



Insects, 



Mammalian teeth, 



Mammals, 



Nemerteans, . 



Peripatus, 



Petromyzon, . 



Placenta, 



Polychaeta, . 



Reptilia, 



Scorpion, 



Sea anemone, 



Skate, . . 



Skull, . 



Sponges, 



Tunicata, 



Vertebrata, . 



Diadema, .... 240 

 >is, . 541 



jm, . . . .674 

 Dibranchiata, . . 385, 386 

 Dichogamy in Cymothoidas, . 277 

 Myxine, . . 468 

 Tunicata, . 407 



. 3 > 6 95 



Dicyema, . . . .127 



"ilse, . . . . 127 

 Dn, . . . . 592 

 a, . . . .684 

 ddse, . . . 686 



/s, 686 



Differentiation, . . . 32 



_ 99 



Digenetic Trematodes, . .170 

 estion, . . .22-23, 737 

 Intra-cellular in Protozoa, 86 



,, in Sponges, 



jitigrade, .... 

 Dimorphism of sexes, 

 Dinoflagellata, 

 Dinophilus, . . 

 Dinornis, . . . .619 

 ia, .... 593 

 mm, . . . 704 



Diodon, . . . . 511 



Diphycercal, . . . .518 

 . 156 



Diphyodont dentition, . . 644 

 stic, . . . .116 



121 

 7H 

 50 

 105 

 223 



