GLOSSARY. 



Abranchiate — Without branchiae, or gills. 



AcALEPH^— Jelly-fish . 



Action — A shell-less Mollusc, one of the "sea slugs." 



Actinia — The Sea Anemone. So called from the ray-like disposition of its 

 amis or tentacles. 



AsKEBA — A microscopic animalcule, of jelly-like substance, without organs, 

 without even constant form. 



Anastomose — When the mouths of two vessels unite and blend together, 

 forming one continuous vessel, they are said to anastomose. 



Annelid — Almost all worms arc composed of a succession of rings or seg- 

 ments ; hence they are included under the tenn Afitmlaia or Annelida. 



Anthea — A species of Sea Anemone. 



Arr.TSlA — A gasteropodous Mollusc, popularly called the Sea Hare. (Plate 



IL, fig. 3.) 

 Arborescent — Branched like a tree. 

 AsciDiAN— A Mollusc, without head or shell, having two orifices nearly on a 



level, and shaped like a leathern bottle (askos is the Greek for flask). See 



Frontispiece, fig. 4. The Ascidians are also found living in colonies. Hence 



there are Solitary Ascidians and Compound Ascidians. 

 Aurora --A species of Sea Anemone, oi-ange-tentacled. 

 Automatic — Actions are said to be automatic when they occur without the 



intervention of the will — e. g. the heart acts automatically ; we breathe 



automaticallj'. 



Balance — The Balanus is one of the fixed Cirripecb. It is not a " shell-fish " 



— i. e. a Mollusc, in spite of its resemblance to one. The rocks are often 



covered with their small flat aud conical shells. They arc also found on the 



shells of the Whelk and other molluscs. 

 Biology — The Science of Life, including Botany, Zoolog}', Phj'siology, and 



Anatomy, which are the branches of this general subject. 

 Bivalve — Molluscs which have two shells closing together are called Bivalves 



— e. g. the Mussel or the Oyster. 

 BOTRYLLUS— A little animal belonging to the Compound Ascidians. Its 



colonics .are found growing on sea-weed and stones, aud look like masses 



of jolly, with stars imbedded in them. 



