INDEX. 



937 



of Mollusca, 454; Medusa, 



247, 748. 

 Venus, 488. 

 Vermes, 578-589- 

 Vermetus, shell, 474- 

 Vermiform appendix, 29. 

 Vermiformia, 691, 73-74- 

 Veronicella, accessory genital 



organs, 118. 



Vertebra, Mammalia, 14; 

 Aves, 59, 63 ; Python, 72; 

 Rana, 80, 82; Teleostei, 

 94, 99-102 ; development 

 of in, 99 ; Vertebrata, 339> 

 340,361, 374, 383, 397, 414. 

 Vertebrata, 335~359- 

 Vesicula prostatica, 30. 

 Vesiculatae, 247. 

 Vibraculum, 237. 

 Vibrissae, 359- , . " 



Visceral arches, v. Branchial 



arches. 



Visceral ganglionic cord of 

 Urochorda, 442 n. 



Viscero-pericardial sac of 



Cephalopoda, 462. 

 Vitellarium, xxiii. 

 Volvox, 845, 846. 



W. 



Wagnerella, 872. 

 Waldheimia, 702. 

 Water-pores of Echmoder- 



mata, 546; Crinoidea, 575- 

 Water-vascular system ol 



Echinodermata, 546, 55 1 * 



560,565,568,574; olAste- 



rias, I93'I94- 

 Weber's organ, 30. 

 Wing, Periplaneta, 142; *- 



secta, 153, 155^ 156, 499, 



500. 

 Wolffian duct, 354, 355, 356. 



Xiphisternum, 60, 362, 384, 

 Xiphosura, 529. 



Y. 



Yellow cells, in Radiolaria, 



88 1 ; v. Symbiosis. 

 Yoldta, gills, 488. 



744. 



Zoaea, 172, 53 8 

 Zoantharia, 733-744- 

 Zoanthidae, 735. 

 Zonites, pedal nervous sys- 



tem, 120. 

 Zoochlorella, 243. 

 Zoocyst, 915. 

 Zooecium, 234. 



v.YeUow 



cells. 



Zoroaster ; 563. 

 Zygantrum, 73. 

 Zygapophysis, 340. 

 Zygobranchia, 482. 

 Zygosphene, 73- 



THE END. 



