97 



CLASS ANNULATA. 



We cannot better describe tbe Annulose animals than in 

 the words of T^amarck ; he calls them, 



"Animals with soft bodies, lengthened, worm-shaped, 

 naked, or inhabiting tubes, with the body divided into 

 segments, or at least transverse wrinkles, often without 

 head, without eyes, and without antennae, unfurnished 

 with articulated limbs, but the greater number having, 

 instead, small protuberances, bearing spines, and capable 

 of being retracted at pleasure, disposed in rows along 

 the sides, though not continued quite to the extremity 

 of the body, and assuming various forms. They have 

 also red blood circulating by veins and arteries ; this 

 separates them from the Worms, properly so called, which 



Shells of various scdcntari/ Annulose Animals. 



have white blood. This colour of the blood is a sin 

 gular fact, since the animals are much less complex 

 in their organization than the Mollusca, which have 



