GLOSSARY 



SCIENTIFIC TEEMS, 



Extracted principally from Professor Owen's learned Work, en- 

 titled (l Lectures on the Comparative Anatomy and Physi- 

 ology of the Invertebrate Animals." 



Acalepha (Gr. akalephe, a nettle) The class of radiated 

 animals with soft skins which have the power of 

 stinging like a nettle. 



Actinia (Gr. aktin, a ray) The genus of Polypes which 

 have many arms, radiating from around the mouth. 



Annellid The Anglicised singular of Annellata. 



Annellata (Lat. annellus, a little ring) The worms in 

 which the body seems to be composed of a suc- 

 cession of little rings, characterised by their red 

 blood. 



Animalcules Those extremely small animals which are 

 invisible to the naked eye. 



Antenna (from the Latin for yard-arm) Applied to the 

 jointed feelers or horns upon the head of insects 

 and Crustacea, and sometimes to the analogous 

 parts, which are not jointed, in worms and other 

 animals. 



Arborescent (Lat. arbor, a tree) Branched like a tree. 



Balanoids (Gr. balanos, an acorn) A family of Sessile- 

 cirripeds, the shells of which are commonly called 

 acorn-shells. 



