GLOSSARY. 681 



Vasiform. (Lat vas, a vessel) Shaped like a bloodvessel or tabe. 



Vextral. Relating to the inferior surface of the body. 



Venteiccxah. (Lat. rentriculus, • a ventricle or small cavity, like those of the 



heart or brain.) Belonging to a ventricle. 

 Vermes. (Lat. vermis, a worm.) Worm-like animals : applied in a very extensive 



sense by Linnaeus. 

 Yertebrata. (Lat. vert^ra, a bone of the back ; firom vertere, to turn.) The 



highest division of the Animal Kingdom, characterised by having a back-bone. 

 Verticillate. (Lat. verticUlus, a whirl.) Arranged like the rays of a wheel or 



spindle. 

 Vermiforii. Worm-shaped. 



Vesicitlj:. (Lat. vesica, a bladder.) Beceptacles like little bladders. 

 Villi. Small processes like the pile of velvet. 

 ViTELLEfE. (Lat. viteUus, yolk.) Of or belonging to the yolk. 

 VivrPARors. (Lat. ririw, alive; pario, I bring forth.) lie animals which bring 



forth their young alive. 



Whobl. The spiral tnm of a shell, and the like arrangement of a group of leaves 



or polypes upon a stem. 

 Whorlino. The act of disposing parts in a series of spiral curves round anaxis. 



XiPHOSURA. (Gr. xiphos, a sword; oicra, a taiL) A family of Crustacea with 

 sword-shaped tails, as the Limulus. 



ZooPHTTE. (Gr. zoom, animal; phyton, plant.) The lowest primary division of 

 the Animal Kingdom, which includes many animals that are fixed to the ground 

 and have the form of plants. 



Zoospore. (Gr. zoon, animal; spora, seed.) The reproductive bodies of sexless 

 water-plants, which enjoy the power of locomotion for a certain time. 



