PLATE XIII. 



FIG. 119. 



Fissiparous multiplication of Chilodon cucullvlus. 



FIG. 120. 



FIG. 121. 



B A 





Rodifer vulgaris, as seen at A, with 

 the wheels drawn in, and at B with 

 the wheels expanded; a, mouth; 6, 

 eye-spots; c, wheels; d, calcar (an- 

 tenna?); e, jaws and teeth; /, ali- 

 mentary canal ; g, glandular (?) mass 

 enclosing it; h, longitudinal mus- 

 cles ; i, i, tubes of water vascular 

 system; k, young animal; /.cloaca. 



Stephanoceros Eichornii. 



