INDEX. 



749 



Zirconiides 



Zoanthidge 



Zoanthoida 



Zoarces viviparus 



Zonuridse 



Zoological equipment 



Zoology 



612 



355 



354 



86 



58 



623 



1 



Zoophyta 

 Zootoca vivipara 

 Zosteracese 



Page 

 5,379 

 . 56 

 . 511 



Zosterites 



. 563 



Zyggenidse 

 Zygophylle89 



. 89 

 . 4U 



ADDENDUM. 



While this work has been passing through the 

 press, the following Sub-Order of Gasteropodous 

 Pectinibranchs has been proposed by Dr. Gray to 

 embrace the family of the Cones (Conidce), and pos- 

 sibly also the Fissure-shells (Turridce). 



S UB-ORDER. — Toxiferous-Pectinibranchs (Toxifera). 



Head with a tubular expansion of the veil between 

 the tentacles ; proboscis retractile, furnished with a 

 fleshy tube, having a bundle of subulate barbed 

 teeth at the end, instead of the usual lingual riband. 

 Carnivorous. 



