Marvels of Pond-Life. 



93 



projections ornament the bottom. This lorica is like 

 the shell of a tortoise open at both ends ; from the top 

 an extremely beautiful wreath of cilia is protruded, and 



Brachionus urceolaris. 



This drawing has been accidentally reversed by the engraver, 



which alters the relative place of the internal organs. 



also some longer and stiff cilia, or slender spines, which 

 do not exhibit the rotatory movement. The ciliary 



